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    <link:label xlink:label="caty_NoteToFinancialStatementDetailsTextual-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note To Financial Statement Details Textual</link:label>
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    <link:label xlink:label="caty_statement-statement-significant-accounting-policies-policies-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Significant Accounting Policies</link:label>
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    <link:label xlink:label="caty_statement-statement-note-3-recent-accounting-pronouncements-tables-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 3 - Recent Accounting Pronouncements</link:label>
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    <link:label xlink:label="us-gaap_HedgingRelationshipDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Hedging Relationship [Domain]</link:label>
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    <link:loc xlink:href="caty-20210331.xsd#caty_statement-statement-note-5-earnings-per-share-tables" xlink:label="caty_statement-statement-note-5-earnings-per-share-tables" xlink:type="locator"/>
    <link:label xlink:label="caty_statement-statement-note-5-earnings-per-share-tables-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 5 - Earnings Per Share</link:label>
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    <link:label xlink:label="caty_QualifiedAffordableHousingAndAlternativeEnergyPartnershipsMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Qualified Affordable Housing and Alternative Energy Partnerships [Member]</link:label>
    <link:label xlink:label="caty_QualifiedAffordableHousingAndAlternativeEnergyPartnershipsMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Related to other commitments.</link:label>
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    <link:label xlink:label="us-gaap_FairValueHedgingMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value Hedging [Member]</link:label>
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    <link:loc xlink:href="caty-20210331.xsd#caty_statement-statement-note-6-stockbased-compensation-tables" xlink:label="caty_statement-statement-note-6-stockbased-compensation-tables" xlink:type="locator"/>
    <link:label xlink:label="caty_statement-statement-note-6-stockbased-compensation-tables-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 6 - Stock-based Compensation</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Due in one year or less, Fair Value</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CollateralizedMortgageObligationsMember" xlink:label="us-gaap_CollateralizedMortgageObligationsMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_CollateralizedMortgageObligationsMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Collateralized Mortgage Obligations [Member]</link:label>
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    <link:label xlink:label="us-gaap_CashFlowHedgingMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash Flow Hedging [Member]</link:label>
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    <link:loc xlink:href="caty-20210331.xsd#caty_statement-statement-note-7-investment-securities-tables" xlink:label="caty_statement-statement-note-7-investment-securities-tables" xlink:type="locator"/>
    <link:label xlink:label="caty_statement-statement-note-7-investment-securities-tables-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 7 - Investment Securities</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Due after one year through five years, Fair Value</link:label>
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    <link:loc xlink:href="caty-20210331.xsd#caty_statement-statement-note-8-loans-tables" xlink:label="caty_statement-statement-note-8-loans-tables" xlink:type="locator"/>
    <link:label xlink:label="caty_statement-statement-note-8-loans-tables-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 8 - Loans</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Due after five years through ten years, Fair Value</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NondesignatedMember" xlink:label="us-gaap_NondesignatedMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_NondesignatedMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Not Designated as Hedging Instrument [Member]</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MortgageBackedSecuritiesMember" xlink:label="us-gaap_MortgageBackedSecuritiesMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_MortgageBackedSecuritiesMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Collateralized Mortgage Backed Securities [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MortgageBackedSecuritiesMember" xlink:to="us-gaap_MortgageBackedSecuritiesMember-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_statement-statement-note-13-fair-value-measurements-and-fair-value-of-financial-instruments-tables" xlink:label="caty_statement-statement-note-13-fair-value-measurements-and-fair-value-of-financial-instruments-tables" xlink:type="locator"/>
    <link:label xlink:label="caty_statement-statement-note-13-fair-value-measurements-and-fair-value-of-financial-instruments-tables-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 13 - Fair Value Measurements and Fair Value of Financial Instruments</link:label>
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    <link:loc xlink:href="caty-20210331.xsd#caty_statement-statement-note-15-financial-derivatives-tables" xlink:label="caty_statement-statement-note-15-financial-derivatives-tables" xlink:type="locator"/>
    <link:label xlink:label="caty_statement-statement-note-15-financial-derivatives-tables-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 15 - Financial Derivatives</link:label>
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    <link:label xlink:label="us-gaap_CommercialMortgageBackedSecuritiesMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Commercial Mortgage Backed Securities [Member]</link:label>
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    <link:label xlink:label="caty_statement-statement-note-16-balance-sheet-offsetting-tables-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 16 - Balance Sheet Offsetting</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_statement-statement-note-16-balance-sheet-offsetting-tables" xlink:to="caty_statement-statement-note-16-balance-sheet-offsetting-tables-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_statement-statement-note-17-revenue-from-contracts-with-customers-tables" xlink:label="caty_statement-statement-note-17-revenue-from-contracts-with-customers-tables" xlink:type="locator"/>
    <link:label xlink:label="caty_statement-statement-note-17-revenue-from-contracts-with-customers-tables-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 17 - Revenue from Contracts with Customers</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_statement-statement-note-17-revenue-from-contracts-with-customers-tables" xlink:to="caty_statement-statement-note-17-revenue-from-contracts-with-customers-tables-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax" xlink:label="us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Unrealized holding (losses)/gains on securities available-for-sale</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax" xlink:to="us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_HedgingDesignationAxis" xlink:label="us-gaap_HedgingDesignationAxis" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_HedgingDesignationAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Hedging Designation [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_HedgingDesignationAxis" xlink:to="us-gaap_HedgingDesignationAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_statement-statement-note-18-stockholders-equity-tables" xlink:label="caty_statement-statement-note-18-stockholders-equity-tables" xlink:type="locator"/>
    <link:label xlink:label="caty_statement-statement-note-18-stockholders-equity-tables-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 18 - Stockholders' Equity</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_statement-statement-note-18-stockholders-equity-tables" xlink:to="caty_statement-statement-note-18-stockholders-equity-tables-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleRestricted" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleRestricted" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DebtSecuritiesAvailableForSaleRestricted-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_DebtSecuritiesAvailableForSaleRestricted</link:label>
    <link:label xlink:label="us-gaap_DebtSecuritiesAvailableForSaleRestricted-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt Securities, Available-for-sale, Restricted</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtSecuritiesAvailableForSaleRestricted" xlink:to="us-gaap_DebtSecuritiesAvailableForSaleRestricted-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_HedgingDesignationDomain" xlink:label="us-gaap_HedgingDesignationDomain" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_HedgingDesignationDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Hedging Designation [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_HedgingDesignationDomain" xlink:to="us-gaap_HedgingDesignationDomain-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_statement-statement-note-3-recent-accounting-pronouncements-cumulative-effect-of-changes-details" xlink:label="caty_statement-statement-note-3-recent-accounting-pronouncements-cumulative-effect-of-changes-details" xlink:type="locator"/>
    <link:label xlink:label="caty_statement-statement-note-3-recent-accounting-pronouncements-cumulative-effect-of-changes-details-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 3 - Recent Accounting Pronouncements - Cumulative Effect of Changes (Details)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_statement-statement-note-3-recent-accounting-pronouncements-cumulative-effect-of-changes-details" xlink:to="caty_statement-statement-note-3-recent-accounting-pronouncements-cumulative-effect-of-changes-details-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DesignatedAsHedgingInstrumentMember" xlink:label="us-gaap_DesignatedAsHedgingInstrumentMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DesignatedAsHedgingInstrumentMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Designated as Hedging Instrument [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DesignatedAsHedgingInstrumentMember" xlink:to="us-gaap_DesignatedAsHedgingInstrumentMember-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_AccretionAmortizationOfInvestments" xlink:label="caty_AccretionAmortizationOfInvestments" xlink:type="locator"/>
    <link:label xlink:label="caty_AccretionAmortizationOfInvestments-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Amortization on alternative energy partnerships, venture capital and other investments</link:label>
    <link:label xlink:label="caty_AccretionAmortizationOfInvestments-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The sum of the periodic adjustments of the differences between investments' face values and purchase prices that are charged against earnings. This is called accretion if the investment was purchased at a discount and amortization if it was purchased at premium. As a noncash item, this element is an adjustment to net income when calculating cash provided by or used in operations using the indirect method.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_AccretionAmortizationOfInvestments" xlink:to="caty_AccretionAmortizationOfInvestments-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_statement-statement-note-5-earnings-per-share-earnings-per-share-details" xlink:label="caty_statement-statement-note-5-earnings-per-share-earnings-per-share-details" xlink:type="locator"/>
    <link:label xlink:label="caty_statement-statement-note-5-earnings-per-share-earnings-per-share-details-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 5 - Earnings Per Share - Earnings Per Share (Details)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_statement-statement-note-5-earnings-per-share-earnings-per-share-details" xlink:to="caty_statement-statement-note-5-earnings-per-share-earnings-per-share-details-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_statement-statement-note-6-stockbased-compensation-restricted-stock-units-details" xlink:label="caty_statement-statement-note-6-stockbased-compensation-restricted-stock-units-details" xlink:type="locator"/>
    <link:label xlink:label="caty_statement-statement-note-6-stockbased-compensation-restricted-stock-units-details-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 6 - Stock-based Compensation - Restricted Stock Units (Details)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_statement-statement-note-6-stockbased-compensation-restricted-stock-units-details" xlink:to="caty_statement-statement-note-6-stockbased-compensation-restricted-stock-units-details-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_statement-statement-note-7-investment-securities-investment-securities-details" xlink:label="caty_statement-statement-note-7-investment-securities-investment-securities-details" xlink:type="locator"/>
    <link:label xlink:label="caty_statement-statement-note-7-investment-securities-investment-securities-details-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 7 - Investment Securities - Investment Securities (Details)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_statement-statement-note-7-investment-securities-investment-securities-details" xlink:to="caty_statement-statement-note-7-investment-securities-investment-securities-details-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_statement-statement-note-7-investment-securities-investments-by-contractual-maturity-date-details" xlink:label="caty_statement-statement-note-7-investment-securities-investments-by-contractual-maturity-date-details" xlink:type="locator"/>
    <link:label xlink:label="caty_statement-statement-note-7-investment-securities-investments-by-contractual-maturity-date-details-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 7 - Investment Securities - Investments by Contractual Maturity Date (Details)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_statement-statement-note-7-investment-securities-investments-by-contractual-maturity-date-details" xlink:to="caty_statement-statement-note-7-investment-securities-investments-by-contractual-maturity-date-details-label" xlink:type="arc"/>
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    <link:label xlink:label="caty_statement-statement-note-7-investment-securities-temporarily-impaired-securities-details-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 7 - Investment Securities - Temporarily Impaired Securities (Details)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_statement-statement-note-7-investment-securities-temporarily-impaired-securities-details" xlink:to="caty_statement-statement-note-7-investment-securities-temporarily-impaired-securities-details-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_statement-statement-note-8-loans-components-of-loans-in-consolidated-balance-sheets-details" xlink:label="caty_statement-statement-note-8-loans-components-of-loans-in-consolidated-balance-sheets-details" xlink:type="locator"/>
    <link:label xlink:label="caty_statement-statement-note-8-loans-components-of-loans-in-consolidated-balance-sheets-details-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 8 - Loans - Components of Loans in Consolidated Balance Sheets (Details)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_statement-statement-note-8-loans-components-of-loans-in-consolidated-balance-sheets-details" xlink:to="caty_statement-statement-note-8-loans-components-of-loans-in-consolidated-balance-sheets-details-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_statement-statement-note-8-loans-average-balance-and-interest-income-recognized-related-to-impaired-loans-details" xlink:label="caty_statement-statement-note-8-loans-average-balance-and-interest-income-recognized-related-to-impaired-loans-details" xlink:type="locator"/>
    <link:label xlink:label="caty_statement-statement-note-8-loans-average-balance-and-interest-income-recognized-related-to-impaired-loans-details-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 8 - Loans - Average Balance and Interest Income Recognized Related to Impaired Loans (Details)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_statement-statement-note-8-loans-average-balance-and-interest-income-recognized-related-to-impaired-loans-details" xlink:to="caty_statement-statement-note-8-loans-average-balance-and-interest-income-recognized-related-to-impaired-loans-details-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_statement-statement-note-8-loans-impaired-loans-and-related-allowance-for-credit-losses-details" xlink:label="caty_statement-statement-note-8-loans-impaired-loans-and-related-allowance-for-credit-losses-details" xlink:type="locator"/>
    <link:label xlink:label="caty_statement-statement-note-8-loans-impaired-loans-and-related-allowance-for-credit-losses-details-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 8 - Loans - Impaired Loans and Related Allowance for Credit Losses (Details)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_statement-statement-note-8-loans-impaired-loans-and-related-allowance-for-credit-losses-details" xlink:to="caty_statement-statement-note-8-loans-impaired-loans-and-related-allowance-for-credit-losses-details-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_statement-statement-note-8-loans-aging-of-loan-portfolio-details" xlink:label="caty_statement-statement-note-8-loans-aging-of-loan-portfolio-details" xlink:type="locator"/>
    <link:label xlink:label="caty_statement-statement-note-8-loans-aging-of-loan-portfolio-details-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 8 - Loans - Aging of Loan Portfolio (Details)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_statement-statement-note-8-loans-aging-of-loan-portfolio-details" xlink:to="caty_statement-statement-note-8-loans-aging-of-loan-portfolio-details-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_statement-statement-note-8-loans-troubled-debt-restructuring-details" xlink:label="caty_statement-statement-note-8-loans-troubled-debt-restructuring-details" xlink:type="locator"/>
    <link:label xlink:label="caty_statement-statement-note-8-loans-troubled-debt-restructuring-details-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 8 - Loans - Troubled Debt Restructuring (Details)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_statement-statement-note-8-loans-troubled-debt-restructuring-details" xlink:to="caty_statement-statement-note-8-loans-troubled-debt-restructuring-details-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_statement-statement-note-8-loans-accruing-troubled-debt-restructurings-details" xlink:label="caty_statement-statement-note-8-loans-accruing-troubled-debt-restructurings-details" xlink:type="locator"/>
    <link:label xlink:label="caty_statement-statement-note-8-loans-accruing-troubled-debt-restructurings-details-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 8 - Loans - Accruing Troubled Debt Restructurings (Details)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_statement-statement-note-8-loans-accruing-troubled-debt-restructurings-details" xlink:to="caty_statement-statement-note-8-loans-accruing-troubled-debt-restructurings-details-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_statement-statement-note-8-loans-nonaccrual-troubled-debt-restructurings-details" xlink:label="caty_statement-statement-note-8-loans-nonaccrual-troubled-debt-restructurings-details" xlink:type="locator"/>
    <link:label xlink:label="caty_statement-statement-note-8-loans-nonaccrual-troubled-debt-restructurings-details-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 8 - Loans - Non-accrual Troubled Debt Restructurings (Details)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_statement-statement-note-8-loans-nonaccrual-troubled-debt-restructurings-details" xlink:to="caty_statement-statement-note-8-loans-nonaccrual-troubled-debt-restructurings-details-label" xlink:type="arc"/>
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    <link:label xlink:label="caty_statement-statement-note-8-loans-troubled-debt-restructuring-activity-details-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 8 - Loans - Troubled Debt Restructuring Activity (Details)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_statement-statement-note-8-loans-troubled-debt-restructuring-activity-details" xlink:to="caty_statement-statement-note-8-loans-troubled-debt-restructuring-activity-details-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_statement-statement-note-8-loans-portfolio-by-risk-rating-details" xlink:label="caty_statement-statement-note-8-loans-portfolio-by-risk-rating-details" xlink:type="locator"/>
    <link:label xlink:label="caty_statement-statement-note-8-loans-portfolio-by-risk-rating-details-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 8 - Loans - Portfolio by Risk Rating (Details)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_statement-statement-note-8-loans-portfolio-by-risk-rating-details" xlink:to="caty_statement-statement-note-8-loans-portfolio-by-risk-rating-details-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_statement-statement-note-8-loans-loan-held-for-investment-by-loan-portfolio-segments-internal-risk-ratings-and-vintage-year-details" xlink:label="caty_statement-statement-note-8-loans-loan-held-for-investment-by-loan-portfolio-segments-internal-risk-ratings-and-vintage-year-details" xlink:type="locator"/>
    <link:label xlink:label="caty_statement-statement-note-8-loans-loan-held-for-investment-by-loan-portfolio-segments-internal-risk-ratings-and-vintage-year-details-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 8 - Loans - Loan Held for Investment by Loan Portfolio Segments, Internal Risk Ratings and Vintage Year (Details)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_statement-statement-note-8-loans-loan-held-for-investment-by-loan-portfolio-segments-internal-risk-ratings-and-vintage-year-details" xlink:to="caty_statement-statement-note-8-loans-loan-held-for-investment-by-loan-portfolio-segments-internal-risk-ratings-and-vintage-year-details-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_statement-statement-note-8-loans-allowance-for-loan-losses-by-portfolio-segment-and-based-on-impairment-method-details" xlink:label="caty_statement-statement-note-8-loans-allowance-for-loan-losses-by-portfolio-segment-and-based-on-impairment-method-details" xlink:type="locator"/>
    <link:label xlink:label="caty_statement-statement-note-8-loans-allowance-for-loan-losses-by-portfolio-segment-and-based-on-impairment-method-details-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 8 - Loans - Allowance for Loan Losses by Portfolio Segment and Based on Impairment Method (Details)</link:label>
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    <link:label xlink:label="caty_statement-statement-note-8-loans-allowance-for-loan-losses-by-portfolio-segment-details-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 8 - Loans - Allowance for Loan Losses by Portfolio Segment (Details)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_statement-statement-note-8-loans-allowance-for-loan-losses-by-portfolio-segment-details" xlink:to="caty_statement-statement-note-8-loans-allowance-for-loan-losses-by-portfolio-segment-details-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PassMember" xlink:label="us-gaap_PassMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_PassMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Pass [Member]</link:label>
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    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Granted, weighted-average grant date fair value (in dollars per share)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue-label" xlink:type="arc"/>
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    <link:label xlink:label="caty_statement-statement-note-10-leases-operating-lease-related-assets-and-liabilities-details-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 10 - Leases - Operating Lease Related Assets and Liabilities (Details)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_statement-statement-note-10-leases-operating-lease-related-assets-and-liabilities-details" xlink:to="caty_statement-statement-note-10-leases-operating-lease-related-assets-and-liabilities-details-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_IncentivePlan2005Member" xlink:label="caty_IncentivePlan2005Member" xlink:type="locator"/>
    <link:label xlink:label="caty_IncentivePlan2005Member-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">2005 Incentive Plan [Member]</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_IncentivePlan2005Member" xlink:to="caty_IncentivePlan2005Member-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_statement-statement-note-10-leases-lease-maturity-schedule-details" xlink:label="caty_statement-statement-note-10-leases-lease-maturity-schedule-details" xlink:type="locator"/>
    <link:label xlink:label="caty_statement-statement-note-10-leases-lease-maturity-schedule-details-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 10 - Leases - Lease Maturity Schedule (Details)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_statement-statement-note-10-leases-lease-maturity-schedule-details" xlink:to="caty_statement-statement-note-10-leases-lease-maturity-schedule-details-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Vested, weighted-average grant date fair value (in dollars per share)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock" xlink:label="us-gaap_ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock" xlink:to="us-gaap_ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Forfeited, weighted-average grant date fair value (in dollars per share)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_statement-statement-note-13-fair-value-measurements-and-fair-value-of-financial-instruments-assets-and-liabilities-measured-at-fair-value-on-a-recurring-basis-details" xlink:label="caty_statement-statement-note-13-fair-value-measurements-and-fair-value-of-financial-instruments-assets-and-liabilities-measured-at-fair-value-on-a-recurring-basis-details" xlink:type="locator"/>
    <link:label xlink:label="caty_statement-statement-note-13-fair-value-measurements-and-fair-value-of-financial-instruments-assets-and-liabilities-measured-at-fair-value-on-a-recurring-basis-details-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 13 - Fair Value Measurements and Fair Value of Financial Instruments - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_statement-statement-note-13-fair-value-measurements-and-fair-value-of-financial-instruments-assets-and-liabilities-measured-at-fair-value-on-a-recurring-basis-details" xlink:to="caty_statement-statement-note-13-fair-value-measurements-and-fair-value-of-financial-instruments-assets-and-liabilities-measured-at-fair-value-on-a-recurring-basis-details-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProceedsFromSaleOfTradingSecuritiesHeldforinvestment" xlink:label="us-gaap_ProceedsFromSaleOfTradingSecuritiesHeldforinvestment" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ProceedsFromSaleOfTradingSecuritiesHeldforinvestment-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from sale of equity securities</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromSaleOfTradingSecuritiesHeldforinvestment" xlink:to="us-gaap_ProceedsFromSaleOfTradingSecuritiesHeldforinvestment-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue</link:label>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue-label" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Balance, weighted-average grant date fair value (in dollars per share)</link:label>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue-label" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Balance, weighted-average grant date fair value (in dollars per share)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_USTreasurySecuritiesMember" xlink:label="us-gaap_USTreasurySecuritiesMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_USTreasurySecuritiesMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">US Treasury Securities [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_USTreasurySecuritiesMember" xlink:to="us-gaap_USTreasurySecuritiesMember-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_statement-statement-note-13-fair-value-measurements-and-fair-value-of-financial-instruments-financial-assets-and-liabilities-measured-on-a-nonrecurring-basis-details" xlink:label="caty_statement-statement-note-13-fair-value-measurements-and-fair-value-of-financial-instruments-financial-assets-and-liabilities-measured-on-a-nonrecurring-basis-details" xlink:type="locator"/>
    <link:label xlink:label="caty_statement-statement-note-13-fair-value-measurements-and-fair-value-of-financial-instruments-financial-assets-and-liabilities-measured-on-a-nonrecurring-basis-details-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 13 - Fair Value Measurements and Fair Value of Financial Instruments - Financial Assets and Liabilities Measured on a Non-recurring Basis (Details)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_statement-statement-note-13-fair-value-measurements-and-fair-value-of-financial-instruments-financial-assets-and-liabilities-measured-on-a-nonrecurring-basis-details" xlink:to="caty_statement-statement-note-13-fair-value-measurements-and-fair-value-of-financial-instruments-financial-assets-and-liabilities-measured-on-a-nonrecurring-basis-details-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod</link:label>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Forfeited (in shares)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_statement-statement-note-13-fair-value-measurements-and-fair-value-of-financial-instruments-fair-value-of-financial-instruments-details" xlink:label="caty_statement-statement-note-13-fair-value-measurements-and-fair-value-of-financial-instruments-fair-value-of-financial-instruments-details" xlink:type="locator"/>
    <link:label xlink:label="caty_statement-statement-note-13-fair-value-measurements-and-fair-value-of-financial-instruments-fair-value-of-financial-instruments-details-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 13 - Fair Value Measurements and Fair Value of Financial Instruments - Fair Value of Financial Instruments (Details)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_statement-statement-note-13-fair-value-measurements-and-fair-value-of-financial-instruments-fair-value-of-financial-instruments-details" xlink:to="caty_statement-statement-note-13-fair-value-measurements-and-fair-value-of-financial-instruments-fair-value-of-financial-instruments-details-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_statement-statement-note-13-fair-value-measurements-and-fair-value-of-financial-instruments-fair-value-hierarchy-of-financial-instruments-details" xlink:label="caty_statement-statement-note-13-fair-value-measurements-and-fair-value-of-financial-instruments-fair-value-hierarchy-of-financial-instruments-details" xlink:type="locator"/>
    <link:label xlink:label="caty_statement-statement-note-13-fair-value-measurements-and-fair-value-of-financial-instruments-fair-value-hierarchy-of-financial-instruments-details-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 13 - Fair Value Measurements and Fair Value of Financial Instruments - Fair Value Hierarchy of Financial Instruments (Details)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_statement-statement-note-13-fair-value-measurements-and-fair-value-of-financial-instruments-fair-value-hierarchy-of-financial-instruments-details" xlink:to="caty_statement-statement-note-13-fair-value-measurements-and-fair-value-of-financial-instruments-fair-value-hierarchy-of-financial-instruments-details-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_OvernightBorrowingsMember" xlink:label="caty_OvernightBorrowingsMember" xlink:type="locator"/>
    <link:label xlink:label="caty_OvernightBorrowingsMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Over-night Borrowings [Member]</link:label>
    <link:label xlink:label="caty_OvernightBorrowingsMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents over-night borrowings.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_OvernightBorrowingsMember" xlink:to="caty_OvernightBorrowingsMember-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_statement-statement-note-15-financial-derivatives-cash-flow-swap-hedges-details" xlink:label="caty_statement-statement-note-15-financial-derivatives-cash-flow-swap-hedges-details" xlink:type="locator"/>
    <link:label xlink:label="caty_statement-statement-note-15-financial-derivatives-cash-flow-swap-hedges-details-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 15 - Financial Derivatives - Cash Flow Swap Hedges (Details)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_statement-statement-note-15-financial-derivatives-cash-flow-swap-hedges-details" xlink:to="caty_statement-statement-note-15-financial-derivatives-cash-flow-swap-hedges-details-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber</link:label>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber-label" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Balance (in shares)</link:label>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber-label" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Balance (in shares)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeTermOfContract" xlink:label="us-gaap_DerivativeTermOfContract" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DerivativeTermOfContract-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_DerivativeTermOfContract</link:label>
    <link:label xlink:label="us-gaap_DerivativeTermOfContract-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Derivative, Term of Contract (Year)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeTermOfContract" xlink:to="us-gaap_DerivativeTermOfContract-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_statement-statement-note-15-financial-derivatives-fair-value-swap-hedges-details" xlink:label="caty_statement-statement-note-15-financial-derivatives-fair-value-swap-hedges-details" xlink:type="locator"/>
    <link:label xlink:label="caty_statement-statement-note-15-financial-derivatives-fair-value-swap-hedges-details-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 15 - Financial Derivatives - Fair Value Swap Hedges (Details)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_statement-statement-note-15-financial-derivatives-fair-value-swap-hedges-details" xlink:to="caty_statement-statement-note-15-financial-derivatives-fair-value-swap-hedges-details-label" xlink:type="arc"/>
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    <link:label xlink:label="caty_statement-statement-note-15-financial-derivatives-not-designated-as-hedging-details-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 15 - Financial Derivatives - Not Designated as Hedging (Details)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_statement-statement-note-15-financial-derivatives-not-designated-as-hedging-details" xlink:to="caty_statement-statement-note-15-financial-derivatives-not-designated-as-hedging-details-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OciBeforeReclassificationsNetOfTaxAttributableToParent" xlink:label="us-gaap_OciBeforeReclassificationsNetOfTaxAttributableToParent" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_OciBeforeReclassificationsNetOfTaxAttributableToParent-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net unrealized (losses)/gains arising during the period, net of tax</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OciBeforeReclassificationsNetOfTaxAttributableToParent" xlink:to="us-gaap_OciBeforeReclassificationsNetOfTaxAttributableToParent-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_USGovernmentCorporationsAndAgenciesSecuritiesMember" xlink:label="us-gaap_USGovernmentCorporationsAndAgenciesSecuritiesMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_USGovernmentCorporationsAndAgenciesSecuritiesMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">US Government Corporations and Agencies Securities [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_USGovernmentCorporationsAndAgenciesSecuritiesMember" xlink:to="us-gaap_USGovernmentCorporationsAndAgenciesSecuritiesMember-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InternalCreditAssessmentAxis" xlink:label="us-gaap_InternalCreditAssessmentAxis" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_InternalCreditAssessmentAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Internal Credit Assessment [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InternalCreditAssessmentAxis" xlink:to="us-gaap_InternalCreditAssessmentAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent" xlink:label="us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent</link:label>
    <link:label xlink:label="us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Reclassification adjustment for net losses/(gains) included in net income, net of tax</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent" xlink:to="us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_statement-statement-note-16-balance-sheet-offsetting-financial-instruments-that-are-eligible-for-offset-in-the-consolidated-balance-sheet-details" xlink:label="caty_statement-statement-note-16-balance-sheet-offsetting-financial-instruments-that-are-eligible-for-offset-in-the-consolidated-balance-sheet-details" xlink:type="locator"/>
    <link:label xlink:label="caty_statement-statement-note-16-balance-sheet-offsetting-financial-instruments-that-are-eligible-for-offset-in-the-consolidated-balance-sheet-details-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 16 - Balance Sheet Offsetting - Financial Instruments That Are Eligible for Offset in the Consolidated Balance Sheet (Details)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_statement-statement-note-16-balance-sheet-offsetting-financial-instruments-that-are-eligible-for-offset-in-the-consolidated-balance-sheet-details" xlink:to="caty_statement-statement-note-16-balance-sheet-offsetting-financial-instruments-that-are-eligible-for-offset-in-the-consolidated-balance-sheet-details-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities" xlink:label="us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from repayments, maturities and calls of investment securities available-for-sale</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities" xlink:to="us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InternalCreditAssessmentDomain" xlink:label="us-gaap_InternalCreditAssessmentDomain" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_InternalCreditAssessmentDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Internal Credit Assessment [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InternalCreditAssessmentDomain" xlink:to="us-gaap_InternalCreditAssessmentDomain-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod-label" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Granted (in shares)</link:label>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_statement-statement-note-17-revenue-from-contracts-with-customers-summary-of-revenue-details" xlink:label="caty_statement-statement-note-17-revenue-from-contracts-with-customers-summary-of-revenue-details" xlink:type="locator"/>
    <link:label xlink:label="caty_statement-statement-note-17-revenue-from-contracts-with-customers-summary-of-revenue-details-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 17 - Revenue from Contracts with Customers - Summary of Revenue (Details)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_statement-statement-note-17-revenue-from-contracts-with-customers-summary-of-revenue-details" xlink:to="caty_statement-statement-note-17-revenue-from-contracts-with-customers-summary-of-revenue-details-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_DerivativeOutstandingNotionalAmount" xlink:label="caty_DerivativeOutstandingNotionalAmount" xlink:type="locator"/>
    <link:label xlink:label="caty_DerivativeOutstandingNotionalAmount-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">caty_DerivativeOutstandingNotionalAmount</link:label>
    <link:label xlink:label="caty_DerivativeOutstandingNotionalAmount-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Derivative Outstanding, Notional Amount</link:label>
    <link:label xlink:label="caty_DerivativeOutstandingNotionalAmount-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Outstanding notional amount specified by the derivative(s). Expressed as an absolute value.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_DerivativeOutstandingNotionalAmount" xlink:to="caty_DerivativeOutstandingNotionalAmount-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod</link:label>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod-label" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Vested (in shares)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_statement-statement-note-18-stockholders-equity-accumulated-other-comprehensive-income-details" xlink:label="caty_statement-statement-note-18-stockholders-equity-accumulated-other-comprehensive-income-details" xlink:type="locator"/>
    <link:label xlink:label="caty_statement-statement-note-18-stockholders-equity-accumulated-other-comprehensive-income-details-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 18 - Stockholders' Equity - Accumulated Other Comprehensive Income (Details)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_statement-statement-note-18-stockholders-equity-accumulated-other-comprehensive-income-details" xlink:to="caty_statement-statement-note-18-stockholders-equity-accumulated-other-comprehensive-income-details-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CorporateDebtSecuritiesMember" xlink:label="us-gaap_CorporateDebtSecuritiesMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_CorporateDebtSecuritiesMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Corporate Debt Securities [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CorporateDebtSecuritiesMember" xlink:to="us-gaap_CorporateDebtSecuritiesMember-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_NotesToFinancialStatements" xlink:label="caty_NotesToFinancialStatements" xlink:type="locator"/>
    <link:label xlink:label="caty_NotesToFinancialStatements-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Notes To Financial Statements</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_NotesToFinancialStatements" xlink:to="caty_NotesToFinancialStatements-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_InterestExpenseDeferredPaymentsFromAcquisition" xlink:label="caty_InterestExpenseDeferredPaymentsFromAcquisition" xlink:type="locator"/>
    <link:label xlink:label="caty_InterestExpenseDeferredPaymentsFromAcquisition-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">caty_InterestExpenseDeferredPaymentsFromAcquisition</link:label>
    <link:label xlink:label="caty_InterestExpenseDeferredPaymentsFromAcquisition-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deferred payments from acquisition</link:label>
    <link:label xlink:label="caty_InterestExpenseDeferredPaymentsFromAcquisition-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Interest expense incurred during the period on deferred payments from business acquisition.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_InterestExpenseDeferredPaymentsFromAcquisition" xlink:to="caty_InterestExpenseDeferredPaymentsFromAcquisition-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_NotesToFinancialStatementsAbstract" xlink:label="caty_NotesToFinancialStatementsAbstract" xlink:type="locator"/>
    <link:label xlink:label="caty_NotesToFinancialStatementsAbstract-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Notes To Financial Statements [Abstract]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_NotesToFinancialStatementsAbstract" xlink:to="caty_NotesToFinancialStatementsAbstract-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTax-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_OtherComprehensiveIncomeLossNetOfTax</link:label>
    <link:label xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTax-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other Comprehensive Income (Loss), Net of Tax, Total</link:label>
    <link:label xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTax-label" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total other comprehensive (loss)/gain, net of tax</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:to="us-gaap_OtherComprehensiveIncomeLossNetOfTax-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_InstallmentAndOtherLoansMember" xlink:label="caty_InstallmentAndOtherLoansMember" xlink:type="locator"/>
    <link:label xlink:label="caty_InstallmentAndOtherLoansMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Installment and Other Loans [Member ]</link:label>
    <link:label xlink:label="caty_InstallmentAndOtherLoansMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The installment and other loans.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_InstallmentAndOtherLoansMember" xlink:to="caty_InstallmentAndOtherLoansMember-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProceedsFromSaleOfOtherRealEstate" xlink:label="us-gaap_ProceedsFromSaleOfOtherRealEstate" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ProceedsFromSaleOfOtherRealEstate-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from sales of other real estate owned</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromSaleOfOtherRealEstate" xlink:to="us-gaap_ProceedsFromSaleOfOtherRealEstate-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ForeignExchangeContractMember" xlink:label="us-gaap_ForeignExchangeContractMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ForeignExchangeContractMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Foreign Exchange Contract [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ForeignExchangeContractMember" xlink:to="us-gaap_ForeignExchangeContractMember-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_ImpairmentMethodMember" xlink:label="caty_ImpairmentMethodMember" xlink:type="locator"/>
    <link:label xlink:label="caty_ImpairmentMethodMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Impairment Method [Member]</link:label>
    <link:label xlink:label="caty_ImpairmentMethodMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents information relating to the impairment method.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_ImpairmentMethodMember" xlink:to="caty_ImpairmentMethodMember-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfAmountsRecognizedInBalanceSheetTableTextBlock" xlink:label="us-gaap_ScheduleOfAmountsRecognizedInBalanceSheetTableTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ScheduleOfAmountsRecognizedInBalanceSheetTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Amounts Recognized in Balance Sheet [Table Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfAmountsRecognizedInBalanceSheetTableTextBlock" xlink:to="us-gaap_ScheduleOfAmountsRecognizedInBalanceSheetTableTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_HELOCLoansMember" xlink:label="caty_HELOCLoansMember" xlink:type="locator"/>
    <link:label xlink:label="caty_HELOCLoansMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">HELOC Loans [Member]</link:label>
    <link:label xlink:label="caty_HELOCLoansMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents HELOC Loans.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_HELOCLoansMember" xlink:to="caty_HELOCLoansMember-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:label="us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Instruments [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:to="us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_ForeclosedRealEstateExpenseIncome" xlink:label="caty_ForeclosedRealEstateExpenseIncome" xlink:type="locator"/>
    <link:label xlink:label="caty_ForeclosedRealEstateExpenseIncome-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other real estate owned expense/(income)</link:label>
    <link:label xlink:label="caty_ForeclosedRealEstateExpenseIncome-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount of expense (income) recognized during the period for the foreclosure on real estate assets.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_ForeclosedRealEstateExpenseIncome" xlink:to="caty_ForeclosedRealEstateExpenseIncome-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancialInstrumentAxis" xlink:label="us-gaap_FinancialInstrumentAxis" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_FinancialInstrumentAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Instrument [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinancialInstrumentAxis" xlink:to="us-gaap_FinancialInstrumentAxis-label" xlink:type="arc"/>
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    <link:label xlink:label="us-gaap_DerivativeAssetNotionalAmount-label" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Interest rate swaps</link:label>
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    <link:label xlink:label="us-gaap_DerivativeLiabilityNotionalAmount-label" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Interest rate swaps</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeasesTextBlock" xlink:label="us-gaap_LesseeOperatingLeasesTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_LesseeOperatingLeasesTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Operating Leases [Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeasesTextBlock" xlink:to="us-gaap_LesseeOperatingLeasesTextBlock-label" xlink:type="arc"/>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PolicyTextBlockAbstract" xlink:label="us-gaap_PolicyTextBlockAbstract" xlink:type="locator"/>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SpecialMentionMember" xlink:label="us-gaap_SpecialMentionMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_SpecialMentionMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Special Mention [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SpecialMentionMember" xlink:to="us-gaap_SpecialMentionMember-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear" xlink:label="us-gaap_FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Pass, Loans Amortized Cost Basis by Origination Year 2017</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear" xlink:to="us-gaap_FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubstandardMember" xlink:label="us-gaap_SubstandardMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_SubstandardMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Substandard [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubstandardMember" xlink:to="us-gaap_SubstandardMember-label" xlink:type="arc"/>
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    <link:label xlink:label="us-gaap_FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Pass, Loans Amortized Cost Basis by Origination Year Prior</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear" xlink:to="us-gaap_FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DoubtfulMember" xlink:label="us-gaap_DoubtfulMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DoubtfulMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Doubtful [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DoubtfulMember" xlink:to="us-gaap_DoubtfulMember-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear" xlink:label="us-gaap_FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Pass, Loans Amortized Cost Basis by Origination Year 2019</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear" xlink:to="us-gaap_FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear" xlink:label="us-gaap_FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Pass, Loans Amortized Cost Basis by Origination Year 2018</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear" xlink:to="us-gaap_FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant</link:label>
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    <link:label xlink:label="us-gaap_FinancingReceivableRevolving-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Pass, Revolving Loans</link:label>
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    <link:label xlink:label="us-gaap_Assets-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_Assets</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseImpairmentLoss" xlink:to="us-gaap_OperatingLeaseImpairmentLoss-label" xlink:type="arc"/>
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    <link:label xlink:label="us-gaap_PaymentDeferralMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payment Deferral [Member]</link:label>
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    <link:loc xlink:href="caty-20210331.xsd#caty_PerformanceBasedRestrictedStockUnitsMember" xlink:label="caty_PerformanceBasedRestrictedStockUnitsMember" xlink:type="locator"/>
    <link:label xlink:label="caty_PerformanceBasedRestrictedStockUnitsMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Performance-based Restricted Stock Units [Member]</link:label>
    <link:label xlink:label="caty_PerformanceBasedRestrictedStockUnitsMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Information related to performance-based restricted stock units.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_PerformanceBasedRestrictedStockUnitsMember" xlink:to="caty_PerformanceBasedRestrictedStockUnitsMember-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock" xlink:label="us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Payment Arrangement [Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock" xlink:to="us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_TimeBasedRestrictedStockUnitsMember" xlink:label="caty_TimeBasedRestrictedStockUnitsMember" xlink:type="locator"/>
    <link:label xlink:label="caty_TimeBasedRestrictedStockUnitsMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Time-based Restricted Stock Units [Member]</link:label>
    <link:label xlink:label="caty_TimeBasedRestrictedStockUnitsMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Information related to time-based restricted stock units.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_TimeBasedRestrictedStockUnitsMember" xlink:to="caty_TimeBasedRestrictedStockUnitsMember-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation" xlink:label="us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation</link:label>
    <link:label xlink:label="us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Shares withheld related to net share settlement of RSUs</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation" xlink:to="us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherAssets" xlink:label="us-gaap_OtherAssets" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_OtherAssets-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other assets</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherAssets" xlink:to="us-gaap_OtherAssets-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Award Type [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LoansInsuredOrGuaranteedByGovernmentAuthoritiesAxis" xlink:label="us-gaap_LoansInsuredOrGuaranteedByGovernmentAuthoritiesAxis" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_LoansInsuredOrGuaranteedByGovernmentAuthoritiesAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loans Insured or Guaranteed by Government Authorities [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LoansInsuredOrGuaranteedByGovernmentAuthoritiesAxis" xlink:to="us-gaap_LoansInsuredOrGuaranteedByGovernmentAuthoritiesAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LoansInsuredOrGuaranteedByGovernmentAuthoritiesDomain" xlink:label="us-gaap_LoansInsuredOrGuaranteedByGovernmentAuthoritiesDomain" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_LoansInsuredOrGuaranteedByGovernmentAuthoritiesDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loans Insured or Guaranteed by Government Authorities [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LoansInsuredOrGuaranteedByGovernmentAuthoritiesDomain" xlink:to="us-gaap_LoansInsuredOrGuaranteedByGovernmentAuthoritiesDomain-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdvancesFromFederalHomeLoanBanks" xlink:label="us-gaap_AdvancesFromFederalHomeLoanBanks" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_AdvancesFromFederalHomeLoanBanks-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Advances from the Federal Home Loan Bank</link:label>
    <link:label xlink:label="us-gaap_AdvancesFromFederalHomeLoanBanks-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Advances from Federal Home Loan Banks, Total</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdvancesFromFederalHomeLoanBanks" xlink:to="us-gaap_AdvancesFromFederalHomeLoanBanks-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="us-gaap_AwardTypeAxis" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_AwardTypeAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Award Type [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AwardTypeAxis" xlink:to="us-gaap_AwardTypeAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="us-gaap_NetIncomeLoss" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_NetIncomeLoss-label" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Net income</link:label>
    <link:label xlink:label="us-gaap_NetIncomeLoss-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net income</link:label>
    <link:label xlink:label="us-gaap_NetIncomeLoss-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net Income (Loss) Attributable to Parent, Total</link:label>
    <link:label xlink:label="us-gaap_NetIncomeLoss-label" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net income</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetIncomeLoss" xlink:to="us-gaap_NetIncomeLoss-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:label="us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_IntangibleAssetsNetExcludingGoodwill-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other intangible assets, net</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:to="us-gaap_IntangibleAssetsNetExcludingGoodwill-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_CommonStockOutstandingMember" xlink:label="caty_CommonStockOutstandingMember" xlink:type="locator"/>
    <link:label xlink:label="caty_CommonStockOutstandingMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common Stock Outstanding [Member]</link:label>
    <link:label xlink:label="caty_CommonStockOutstandingMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Stock outstanding which is subordinate to all other stock of the issuer.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_CommonStockOutstandingMember" xlink:to="caty_CommonStockOutstandingMember-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestrictedStockUnitsRSUMember" xlink:label="us-gaap_RestrictedStockUnitsRSUMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_RestrictedStockUnitsRSUMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restricted Stock Units (RSUs) [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RestrictedStockUnitsRSUMember" xlink:to="us-gaap_RestrictedStockUnitsRSUMember-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivableCreditQualityIndicatorsTableTextBlock" xlink:label="us-gaap_FinancingReceivableCreditQualityIndicatorsTableTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_FinancingReceivableCreditQualityIndicatorsTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financing Receivable Credit Quality Indicators [Table Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinancingReceivableCreditQualityIndicatorsTableTextBlock" xlink:to="us-gaap_FinancingReceivableCreditQualityIndicatorsTableTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_MatureInMay2023Member" xlink:label="caty_MatureInMay2023Member" xlink:type="locator"/>
    <link:label xlink:label="caty_MatureInMay2023Member-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Mature in May 2023 [Member]</link:label>
    <link:label xlink:label="caty_MatureInMay2023Member-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the maturity of May 2023.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_MatureInMay2023Member" xlink:to="caty_MatureInMay2023Member-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentCurrent" xlink:label="us-gaap_FinancingReceivableRecordedInvestmentCurrent" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_FinancingReceivableRecordedInvestmentCurrent-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loans not past due</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinancingReceivableRecordedInvestmentCurrent" xlink:to="us-gaap_FinancingReceivableRecordedInvestmentCurrent-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_MatureInJune2021Member" xlink:label="caty_MatureInJune2021Member" xlink:type="locator"/>
    <link:label xlink:label="caty_MatureInJune2021Member-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Mature in June 2021 [Member]</link:label>
    <link:label xlink:label="caty_MatureInJune2021Member-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Related to debt maturing in June 2021.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_MatureInJune2021Member" xlink:to="caty_MatureInJune2021Member-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_MatureInMay2021Member" xlink:label="caty_MatureInMay2021Member" xlink:type="locator"/>
    <link:label xlink:label="caty_MatureInMay2021Member-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Mature in May 2021 [Member]</link:label>
    <link:label xlink:label="caty_MatureInMay2021Member-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Related to debt maturing in May 2021.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_MatureInMay2021Member" xlink:to="caty_MatureInMay2021Member-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentPastDue" xlink:label="us-gaap_FinancingReceivableRecordedInvestmentPastDue" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_FinancingReceivableRecordedInvestmentPastDue-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loans past due</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinancingReceivableRecordedInvestmentPastDue" xlink:to="us-gaap_FinancingReceivableRecordedInvestmentPastDue-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus" xlink:label="us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Non-accrual loans</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus" xlink:to="us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_WarrantMember" xlink:label="us-gaap_WarrantMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_WarrantMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Warrant [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WarrantMember" xlink:to="us-gaap_WarrantMember-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivables30To59DaysPastDueMember" xlink:label="us-gaap_FinancingReceivables30To59DaysPastDueMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_FinancingReceivables30To59DaysPastDueMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Asset, 30 to 59 Days Past Due [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinancingReceivables30To59DaysPastDueMember" xlink:to="us-gaap_FinancingReceivables30To59DaysPastDueMember-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Antidilutive Securities [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis" xlink:to="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivables60To89DaysPastDueMember" xlink:label="us-gaap_FinancingReceivables60To89DaysPastDueMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_FinancingReceivables60To89DaysPastDueMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Asset, 60 to 89 Days Past Due [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinancingReceivables60To89DaysPastDueMember" xlink:to="us-gaap_FinancingReceivables60To89DaysPastDueMember-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AntidilutiveSecuritiesNameDomain" xlink:label="us-gaap_AntidilutiveSecuritiesNameDomain" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_AntidilutiveSecuritiesNameDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Antidilutive Securities, Name [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AntidilutiveSecuritiesNameDomain" xlink:to="us-gaap_AntidilutiveSecuritiesNameDomain-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember" xlink:label="us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Asset, Equal to or Greater than 90 Days Past Due [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember" xlink:to="us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PastDueFinancingReceivablesTableTextBlock" xlink:label="us-gaap_PastDueFinancingReceivablesTableTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_PastDueFinancingReceivablesTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financing Receivable, Past Due [Table Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PastDueFinancingReceivablesTableTextBlock" xlink:to="us-gaap_PastDueFinancingReceivablesTableTextBlock-label" xlink:type="arc"/>
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    <link:label xlink:label="us-gaap_FinancingReceivablesPeriodPastDueAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Asset, Period Past Due [Axis]</link:label>
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    <link:label xlink:label="us-gaap_Goodwill-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill</link:label>
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    <link:label xlink:label="us-gaap_PaymentsForProceedsFromLoansAndLeases-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_PaymentsForProceedsFromLoansAndLeases</link:label>
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    <link:label xlink:label="us-gaap_LongtermDebtTypeAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt, Type [Axis]</link:label>
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    <link:label xlink:label="us-gaap_LongtermDebtTypeDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt, Type [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongtermDebtTypeDomain" xlink:to="us-gaap_LongtermDebtTypeDomain-label" xlink:type="arc"/>
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    <link:label xlink:label="us-gaap_NotesReceivableGross-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_NotesReceivableGross</link:label>
    <link:label xlink:label="us-gaap_NotesReceivableGross-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Pass</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NotesReceivableGross" xlink:to="us-gaap_NotesReceivableGross-label" xlink:type="arc"/>
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    <link:label xlink:label="us-gaap_DerivativeAssets-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative assets, gross</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProceedsFromSaleOfFederalHomeLoanBankStock" xlink:label="us-gaap_ProceedsFromSaleOfFederalHomeLoanBankStock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ProceedsFromSaleOfFederalHomeLoanBankStock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Redemptions of Federal Home Loan Bank stock</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis" xlink:label="us-gaap_DerivativeInstrumentRiskAxis" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DerivativeInstrumentRiskAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative Instrument [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeInstrumentRiskAxis" xlink:to="us-gaap_DerivativeInstrumentRiskAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="us-gaap_DerivativeContractTypeDomain" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DerivativeContractTypeDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative Contract [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeContractTypeDomain" xlink:to="us-gaap_DerivativeContractTypeDomain-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash Flows from Investing Activities</link:label>
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    <link:label xlink:label="us-gaap_AvailableForSaleSecuritiesDebtSecurities-label" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total, Fair Value</link:label>
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    <link:loc xlink:href="caty-20210331.xsd#caty_NonOvernightBorrowingsMember" xlink:label="caty_NonOvernightBorrowingsMember" xlink:type="locator"/>
    <link:label xlink:label="caty_NonOvernightBorrowingsMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Non Overnight Borrowings [Member]</link:label>
    <link:label xlink:label="caty_NonOvernightBorrowingsMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents borrowings that are not classified as overnight.</link:label>
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    <link:label xlink:label="us-gaap_EarningsPerShareAbstract-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Income Per Common Share:</link:label>
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    <link:label xlink:label="us-gaap_EquitySecuritiesFvNi-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Equity Securities, FV-NI</link:label>
    <link:label xlink:label="us-gaap_EquitySecuritiesFvNi-label" xlink:role="http://www.xbrl.org/2009/role/netLabel" xlink:type="resource" xml:lang="en-US">Equity securities</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EquitySecuritiesFvNi" xlink:to="us-gaap_EquitySecuritiesFvNi-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingLiabilities" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingLiabilities" xlink:type="locator"/>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInOtherOperatingLiabilities" xlink:to="us-gaap_IncreaseDecreaseInOtherOperatingLiabilities-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MarketableSecuritiesGainLoss" xlink:label="us-gaap_MarketableSecuritiesGainLoss" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_MarketableSecuritiesGainLoss-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_MarketableSecuritiesGainLoss</link:label>
    <link:label xlink:label="us-gaap_MarketableSecuritiesGainLoss-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Net gain on sales and calls of securities</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="us-gaap_IncomeTaxExpenseBenefit" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_IncomeTaxExpenseBenefit-label" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Income tax expense</link:label>
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    <link:label xlink:label="us-gaap_DebtInstrumentTerm-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_DebtInstrumentTerm</link:label>
    <link:label xlink:label="us-gaap_DebtInstrumentTerm-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt Instrument, Term (Year)</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestrictedCash" xlink:label="us-gaap_RestrictedCash" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_RestrictedCash-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_RestrictedCash</link:label>
    <link:label xlink:label="us-gaap_RestrictedCash-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Restricted Cash, Total</link:label>
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    <link:label xlink:label="us-gaap_JuniorSubordinatedDebtMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Junior Subordinated Debt [Member]</link:label>
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    <link:label xlink:label="us-gaap_CashAndDueFromBanks-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash and due from banks</link:label>
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    <link:label xlink:label="us-gaap_InterestRateDerivativeLiabilitiesAtFairValue-label" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Interest rate swaps, fair value</link:label>
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    <link:label xlink:label="us-gaap_InterestRateDerivativeAssetsAtFairValue-label" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Interest rate swaps, fair value</link:label>
    <link:label xlink:label="us-gaap_InterestRateDerivativeAssetsAtFairValue-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_InterestRateDerivativeAssetsAtFairValue</link:label>
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    <link:label xlink:label="us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loans individually evaluated for impairment, balance</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment" xlink:to="us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment-label" xlink:type="arc"/>
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    <link:label xlink:label="us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loans collectively evaluated for impairment, allowance</link:label>
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    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_AmendmentFlag" xlink:label="dei_AmendmentFlag" xlink:type="locator"/>
    <link:label xlink:label="dei_AmendmentFlag-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Amendment Flag</link:label>
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    <link:label xlink:label="us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Recoveries</link:label>
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    <link:loc xlink:href="https://xbrl.sec.gov/country/2020/country-2020-01-31.xsd#country_HK" xlink:label="country_HK" xlink:type="locator"/>
    <link:label xlink:label="country_HK-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">HONG KONG</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs" xlink:label="us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs</link:label>
    <link:label xlink:label="us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">YTD period charge-offs</link:label>
    <link:label xlink:label="us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Charge-offs</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTax" xlink:label="us-gaap_ComprehensiveIncomeNetOfTax" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ComprehensiveIncomeNetOfTax-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_ComprehensiveIncomeNetOfTax</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ComprehensiveIncomeNetOfTax" xlink:to="us-gaap_ComprehensiveIncomeNetOfTax-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_CityAreaCode" xlink:label="dei_CityAreaCode" xlink:type="locator"/>
    <link:label xlink:label="dei_CityAreaCode-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">City Area Code</link:label>
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    <link:label xlink:label="us-gaap_OffBalanceSheetCreditLossLiability-label" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Allowance for unfunded commitments</link:label>
    <link:label xlink:label="us-gaap_OffBalanceSheetCreditLossLiability-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_OffBalanceSheetCreditLossLiability</link:label>
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    <link:label xlink:label="us-gaap_SharesOutstanding-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_SharesOutstanding</link:label>
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    <link:label xlink:label="us-gaap_SharesOutstanding-label" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Balance (in shares)</link:label>
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    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityAddressCityOrTown" xlink:label="dei_EntityAddressCityOrTown" xlink:type="locator"/>
    <link:label xlink:label="dei_EntityAddressCityOrTown-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Address, City or Town</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressCityOrTown" xlink:to="dei_EntityAddressCityOrTown-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityAddressPostalZipCode" xlink:label="dei_EntityAddressPostalZipCode" xlink:type="locator"/>
    <link:label xlink:label="dei_EntityAddressPostalZipCode-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Address, Postal Zip Code</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressPostalZipCode" xlink:to="dei_EntityAddressPostalZipCode-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SupplementalCashFlowElementsAbstract" xlink:label="us-gaap_SupplementalCashFlowElementsAbstract" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_SupplementalCashFlowElementsAbstract-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Supplemental disclosure of cash flow information</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SupplementalCashFlowElementsAbstract" xlink:to="us-gaap_SupplementalCashFlowElementsAbstract-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherRealEstateAndForeclosedAssets" xlink:label="us-gaap_OtherRealEstateAndForeclosedAssets" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_OtherRealEstateAndForeclosedAssets-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other real estate owned, net</link:label>
    <link:label xlink:label="us-gaap_OtherRealEstateAndForeclosedAssets-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other Real Estate, Foreclosed Assets, and Repossessed Assets, Total</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherRealEstateAndForeclosedAssets" xlink:to="us-gaap_OtherRealEstateAndForeclosedAssets-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityAddressStateOrProvince" xlink:label="dei_EntityAddressStateOrProvince" xlink:type="locator"/>
    <link:label xlink:label="dei_EntityAddressStateOrProvince-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Address, State or Province</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressStateOrProvince" xlink:to="dei_EntityAddressStateOrProvince-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TreasuryStockValue" xlink:label="us-gaap_TreasuryStockValue" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_TreasuryStockValue-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_TreasuryStockValue</link:label>
    <link:label xlink:label="us-gaap_TreasuryStockValue-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Treasury stock, at cost (11,134,941 shares at March 31, 2021, and 11,134,941 shares at December 31, 2020)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TreasuryStockValue" xlink:to="us-gaap_TreasuryStockValue-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_DerivativeOriginalMaturity" xlink:label="caty_DerivativeOriginalMaturity" xlink:type="locator"/>
    <link:label xlink:label="caty_DerivativeOriginalMaturity-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">caty_DerivativeOriginalMaturity</link:label>
    <link:label xlink:label="caty_DerivativeOriginalMaturity-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Derivative Original Maturity (Year)</link:label>
    <link:label xlink:label="caty_DerivativeOriginalMaturity-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_DerivativeOriginalMaturity" xlink:to="caty_DerivativeOriginalMaturity-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityCommonStockSharesOutstanding" xlink:label="dei_EntityCommonStockSharesOutstanding" xlink:type="locator"/>
    <link:label xlink:label="dei_EntityCommonStockSharesOutstanding-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Common Stock, Shares Outstanding</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityCommonStockSharesOutstanding" xlink:to="dei_EntityCommonStockSharesOutstanding-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DueFromCustomerAcceptances" xlink:label="us-gaap_DueFromCustomerAcceptances" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DueFromCustomerAcceptances-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Customers&#8217; liability on acceptances</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DueFromCustomerAcceptances" xlink:to="us-gaap_DueFromCustomerAcceptances-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock" xlink:label="us-gaap_InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock" xlink:to="us-gaap_InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_NetOfEstimatedDisposalCostsMember" xlink:label="caty_NetOfEstimatedDisposalCostsMember" xlink:type="locator"/>
    <link:label xlink:label="caty_NetOfEstimatedDisposalCostsMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net of Estimated Disposal Costs [Member]</link:label>
    <link:label xlink:label="caty_NetOfEstimatedDisposalCostsMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Net of estimated disposal costs.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_NetOfEstimatedDisposalCostsMember" xlink:to="caty_NetOfEstimatedDisposalCostsMember-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LoansAndLeasesReceivableNetReportedAmount" xlink:label="us-gaap_LoansAndLeasesReceivableNetReportedAmount" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_LoansAndLeasesReceivableNetReportedAmount-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_LoansAndLeasesReceivableNetReportedAmount</link:label>
    <link:label xlink:label="us-gaap_LoansAndLeasesReceivableNetReportedAmount-label" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Loans, net</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LoansAndLeasesReceivableNetReportedAmount" xlink:to="us-gaap_LoansAndLeasesReceivableNetReportedAmount-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_WarrantsOutstandingMember" xlink:label="caty_WarrantsOutstandingMember" xlink:type="locator"/>
    <link:label xlink:label="caty_WarrantsOutstandingMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Warrants Outstanding [Member]</link:label>
    <link:label xlink:label="caty_WarrantsOutstandingMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The warrants outstanding.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_WarrantsOutstandingMember" xlink:to="caty_WarrantsOutstandingMember-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LoansAndLeasesReceivableGrossCarryingAmount" xlink:label="us-gaap_LoansAndLeasesReceivableGrossCarryingAmount" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_LoansAndLeasesReceivableGrossCarryingAmount-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loans</link:label>
    <link:label xlink:label="us-gaap_LoansAndLeasesReceivableGrossCarryingAmount-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loans and Leases Receivable, Gross, Total</link:label>
    <link:label xlink:label="us-gaap_LoansAndLeasesReceivableGrossCarryingAmount-label" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Loans</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LoansAndLeasesReceivableGrossCarryingAmount" xlink:to="us-gaap_LoansAndLeasesReceivableGrossCarryingAmount-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LoansAndLeasesReceivableDeferredIncome" xlink:label="us-gaap_LoansAndLeasesReceivableDeferredIncome" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_LoansAndLeasesReceivableDeferredIncome-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_LoansAndLeasesReceivableDeferredIncome</link:label>
    <link:label xlink:label="us-gaap_LoansAndLeasesReceivableDeferredIncome-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Unamortized deferred loan fees, net</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LoansAndLeasesReceivableDeferredIncome" xlink:to="us-gaap_LoansAndLeasesReceivableDeferredIncome-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProfessionalFees" xlink:label="us-gaap_ProfessionalFees" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ProfessionalFees-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Professional services expense</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProfessionalFees" xlink:to="us-gaap_ProfessionalFees-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueDividendReinvestmentPlan" xlink:label="us-gaap_StockIssuedDuringPeriodValueDividendReinvestmentPlan" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_StockIssuedDuringPeriodValueDividendReinvestmentPlan-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Dividend Reinvestment Plan</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodValueDividendReinvestmentPlan" xlink:to="us-gaap_StockIssuedDuringPeriodValueDividendReinvestmentPlan-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LoansAndLeasesReceivableAllowance" xlink:label="us-gaap_LoansAndLeasesReceivableAllowance" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_LoansAndLeasesReceivableAllowance-label" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Allowance for credit losses on loans</link:label>
    <link:label xlink:label="us-gaap_LoansAndLeasesReceivableAllowance-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_LoansAndLeasesReceivableAllowance</link:label>
    <link:label xlink:label="us-gaap_LoansAndLeasesReceivableAllowance-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loans and Leases Receivable, Allowance, Ending Balance</link:label>
    <link:label xlink:label="us-gaap_LoansAndLeasesReceivableAllowance-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Less: Allowance for loan losses</link:label>
    <link:label xlink:label="us-gaap_LoansAndLeasesReceivableAllowance-label" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Loans, allowance</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LoansAndLeasesReceivableAllowance" xlink:to="us-gaap_LoansAndLeasesReceivableAllowance-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MarketingExpense" xlink:label="us-gaap_MarketingExpense" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_MarketingExpense-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Marketing expense</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MarketingExpense" xlink:to="us-gaap_MarketingExpense-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesDividendReinvestmentPlan" xlink:label="us-gaap_StockIssuedDuringPeriodSharesDividendReinvestmentPlan" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_StockIssuedDuringPeriodSharesDividendReinvestmentPlan-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Dividend Reinvestment Plan (in shares)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesDividendReinvestmentPlan" xlink:to="us-gaap_StockIssuedDuringPeriodSharesDividendReinvestmentPlan-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentTypeCategorizationMember" xlink:label="us-gaap_InvestmentTypeCategorizationMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_InvestmentTypeCategorizationMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Investments [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InvestmentTypeCategorizationMember" xlink:to="us-gaap_InvestmentTypeCategorizationMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_TradingSymbol" xlink:label="dei_TradingSymbol" xlink:type="locator"/>
    <link:label xlink:label="dei_TradingSymbol-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Trading Symbol</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_TradingSymbol" xlink:to="dei_TradingSymbol-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InformationTechnologyAndDataProcessing" xlink:label="us-gaap_InformationTechnologyAndDataProcessing" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_InformationTechnologyAndDataProcessing-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Data processing service expense</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InformationTechnologyAndDataProcessing" xlink:to="us-gaap_InformationTechnologyAndDataProcessing-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentTypeAxis" xlink:label="us-gaap_InvestmentTypeAxis" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_InvestmentTypeAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Investment Type [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InvestmentTypeAxis" xlink:to="us-gaap_InvestmentTypeAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OccupancyNet" xlink:label="us-gaap_OccupancyNet" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_OccupancyNet-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Occupancy expense</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OccupancyNet" xlink:to="us-gaap_OccupancyNet-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_FinancingReceivableNumberOfContractsWithModifications" xlink:label="caty_FinancingReceivableNumberOfContractsWithModifications" xlink:type="locator"/>
    <link:label xlink:label="caty_FinancingReceivableNumberOfContractsWithModifications-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">caty_FinancingReceivableNumberOfContractsWithModifications</link:label>
    <link:label xlink:label="caty_FinancingReceivableNumberOfContractsWithModifications-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financing Receivable, Number of Contracts with Modifications</link:label>
    <link:label xlink:label="caty_FinancingReceivableNumberOfContractsWithModifications-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The number of financing receivables contracts with modifications.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_FinancingReceivableNumberOfContractsWithModifications" xlink:to="caty_FinancingReceivableNumberOfContractsWithModifications-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_HedgedAssetFairValueHedgeLastOfLayerCumulativeIncreaseDecrease" xlink:label="us-gaap_HedgedAssetFairValueHedgeLastOfLayerCumulativeIncreaseDecrease" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_HedgedAssetFairValueHedgeLastOfLayerCumulativeIncreaseDecrease-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_HedgedAssetFairValueHedgeLastOfLayerCumulativeIncreaseDecrease</link:label>
    <link:label xlink:label="us-gaap_HedgedAssetFairValueHedgeLastOfLayerCumulativeIncreaseDecrease-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Hedged Asset, Fair Value Hedge, Last-of-Layer, Cumulative Increase (Decrease)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_HedgedAssetFairValueHedgeLastOfLayerCumulativeIncreaseDecrease" xlink:to="us-gaap_HedgedAssetFairValueHedgeLastOfLayerCumulativeIncreaseDecrease-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NatureOfOperations" xlink:label="us-gaap_NatureOfOperations" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_NatureOfOperations-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Nature of Operations [Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NatureOfOperations" xlink:to="us-gaap_NatureOfOperations-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_SBAsPaycheckProtectionProgramMember" xlink:label="caty_SBAsPaycheckProtectionProgramMember" xlink:type="locator"/>
    <link:label xlink:label="caty_SBAsPaycheckProtectionProgramMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">SBA's Paycheck Protection Program [Member]</link:label>
    <link:label xlink:label="caty_SBAsPaycheckProtectionProgramMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Information related to the SBA's Paycheck Protection Program, or &#8220;PPP&#8221;.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_SBAsPaycheckProtectionProgramMember" xlink:to="caty_SBAsPaycheckProtectionProgramMember-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_OtherRealEstateOwnedMember" xlink:label="caty_OtherRealEstateOwnedMember" xlink:type="locator"/>
    <link:label xlink:label="caty_OtherRealEstateOwnedMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Real Estate Owned [Member]</link:label>
    <link:label xlink:label="caty_OtherRealEstateOwnedMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Information relating to other real estate owned.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_OtherRealEstateOwnedMember" xlink:to="caty_OtherRealEstateOwnedMember-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_FinancingReceivableNumberOfContracts" xlink:label="caty_FinancingReceivableNumberOfContracts" xlink:type="locator"/>
    <link:label xlink:label="caty_FinancingReceivableNumberOfContracts-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">caty_FinancingReceivableNumberOfContracts</link:label>
    <link:label xlink:label="caty_FinancingReceivableNumberOfContracts-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financing Receivable, Number of Contracts</link:label>
    <link:label xlink:label="caty_FinancingReceivableNumberOfContracts-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The number of financing receivables contracts.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_FinancingReceivableNumberOfContracts" xlink:to="caty_FinancingReceivableNumberOfContracts-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_FinancingReceivableNumberOfContractsWithApprovedForbearanceRequests" xlink:label="caty_FinancingReceivableNumberOfContractsWithApprovedForbearanceRequests" xlink:type="locator"/>
    <link:label xlink:label="caty_FinancingReceivableNumberOfContractsWithApprovedForbearanceRequests-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">caty_FinancingReceivableNumberOfContractsWithApprovedForbearanceRequests</link:label>
    <link:label xlink:label="caty_FinancingReceivableNumberOfContractsWithApprovedForbearanceRequests-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financing Receivable, Number of Contracts with Approved Forbearance Requests</link:label>
    <link:label xlink:label="caty_FinancingReceivableNumberOfContractsWithApprovedForbearanceRequests-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The number of financing receivable contracts with approved forbearance requests.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_FinancingReceivableNumberOfContractsWithApprovedForbearanceRequests" xlink:to="caty_FinancingReceivableNumberOfContractsWithApprovedForbearanceRequests-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsForOriginationAndPurchasesOfLoansHeldForSale" xlink:label="us-gaap_PaymentsForOriginationAndPurchasesOfLoansHeldForSale" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_PaymentsForOriginationAndPurchasesOfLoansHeldForSale-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_PaymentsForOriginationAndPurchasesOfLoansHeldForSale</link:label>
    <link:label xlink:label="us-gaap_PaymentsForOriginationAndPurchasesOfLoansHeldForSale-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Originations of loans held for sale</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsForOriginationAndPurchasesOfLoansHeldForSale" xlink:to="us-gaap_PaymentsForOriginationAndPurchasesOfLoansHeldForSale-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LocalPhoneNumber" xlink:label="dei_LocalPhoneNumber" xlink:type="locator"/>
    <link:label xlink:label="dei_LocalPhoneNumber-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Local Phone Number</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_LocalPhoneNumber" xlink:to="dei_LocalPhoneNumber-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_LoansAndLeasesReceivableWithModificationsGross" xlink:label="caty_LoansAndLeasesReceivableWithModificationsGross" xlink:type="locator"/>
    <link:label xlink:label="caty_LoansAndLeasesReceivableWithModificationsGross-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">caty_LoansAndLeasesReceivableWithModificationsGross</link:label>
    <link:label xlink:label="caty_LoansAndLeasesReceivableWithModificationsGross-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loans and Leases Receivable with Modifications, Gross</link:label>
    <link:label xlink:label="caty_LoansAndLeasesReceivableWithModificationsGross-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount before allowance of loans and leases held in portfolio with modifications, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_LoansAndLeasesReceivableWithModificationsGross" xlink:to="caty_LoansAndLeasesReceivableWithModificationsGross-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_HedgedAssetFairValueHedgeLastOfLayerAmount" xlink:label="us-gaap_HedgedAssetFairValueHedgeLastOfLayerAmount" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_HedgedAssetFairValueHedgeLastOfLayerAmount-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_HedgedAssetFairValueHedgeLastOfLayerAmount</link:label>
    <link:label xlink:label="us-gaap_HedgedAssetFairValueHedgeLastOfLayerAmount-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Hedged Asset, Fair Value Hedge, Last-of-Layer, Amount</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_HedgedAssetFairValueHedgeLastOfLayerAmount" xlink:to="us-gaap_HedgedAssetFairValueHedgeLastOfLayerAmount-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TableTextBlock" xlink:label="us-gaap_TableTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_TableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_TableTextBlock</link:label>
    <link:label xlink:label="us-gaap_TableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Notes Tables</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TableTextBlock" xlink:to="us-gaap_TableTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_LoansAndLeasesReceivableWithApprovedForbearanceRequestsGross" xlink:label="caty_LoansAndLeasesReceivableWithApprovedForbearanceRequestsGross" xlink:type="locator"/>
    <link:label xlink:label="caty_LoansAndLeasesReceivableWithApprovedForbearanceRequestsGross-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">caty_LoansAndLeasesReceivableWithApprovedForbearanceRequestsGross</link:label>
    <link:label xlink:label="caty_LoansAndLeasesReceivableWithApprovedForbearanceRequestsGross-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loans and Leases Receivable with Approved Forbearance Requests, Gross</link:label>
    <link:label xlink:label="caty_LoansAndLeasesReceivableWithApprovedForbearanceRequestsGross-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount before allowance of loans and leases held in portfolio with approved forbearance requests, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_LoansAndLeasesReceivableWithApprovedForbearanceRequestsGross" xlink:to="caty_LoansAndLeasesReceivableWithApprovedForbearanceRequestsGross-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_HedgedAssetFairValueHedge" xlink:label="us-gaap_HedgedAssetFairValueHedge" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_HedgedAssetFairValueHedge-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_HedgedAssetFairValueHedge</link:label>
    <link:label xlink:label="us-gaap_HedgedAssetFairValueHedge-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Hedged Asset, Fair Value Hedge</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_HedgedAssetFairValueHedge" xlink:to="us-gaap_HedgedAssetFairValueHedge-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_SpotForwardAndSwapContractsWithNegativeFairValueMember" xlink:label="caty_SpotForwardAndSwapContractsWithNegativeFairValueMember" xlink:type="locator"/>
    <link:label xlink:label="caty_SpotForwardAndSwapContractsWithNegativeFairValueMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Spot, Forward, and Swap Contracts with Negative Fair Value [Member]</link:label>
    <link:label xlink:label="caty_SpotForwardAndSwapContractsWithNegativeFairValueMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the spot, forward, and swap contracts with negative fair value.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_SpotForwardAndSwapContractsWithNegativeFairValueMember" xlink:to="caty_SpotForwardAndSwapContractsWithNegativeFairValueMember-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_SpotForwardAndSwapContractsWithPositiveFairValueMember" xlink:label="caty_SpotForwardAndSwapContractsWithPositiveFairValueMember" xlink:type="locator"/>
    <link:label xlink:label="caty_SpotForwardAndSwapContractsWithPositiveFairValueMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Spot, Forward, and Swap Contracts with Positive Fair Value [Member]</link:label>
    <link:label xlink:label="caty_SpotForwardAndSwapContractsWithPositiveFairValueMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the spot, forward, and swap contracts with positive fair value.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_SpotForwardAndSwapContractsWithPositiveFairValueMember" xlink:to="caty_SpotForwardAndSwapContractsWithPositiveFairValueMember-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_PeriodicNetSettlementOnInterestRateSwapsExpense" xlink:label="caty_PeriodicNetSettlementOnInterestRateSwapsExpense" xlink:type="locator"/>
    <link:label xlink:label="caty_PeriodicNetSettlementOnInterestRateSwapsExpense-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Periodic net settlement of swaps</link:label>
    <link:label xlink:label="caty_PeriodicNetSettlementOnInterestRateSwapsExpense-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The amount of expense of periodic net settlements on interest rate swaps.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_PeriodicNetSettlementOnInterestRateSwapsExpense" xlink:to="caty_PeriodicNetSettlementOnInterestRateSwapsExpense-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures" xlink:label="us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restricted stock units vested (in shares)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures" xlink:to="us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_PeriodicNetSettlementsOnInterestRateSwapsIncome" xlink:label="caty_PeriodicNetSettlementsOnInterestRateSwapsIncome" xlink:type="locator"/>
    <link:label xlink:label="caty_PeriodicNetSettlementsOnInterestRateSwapsIncome-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">caty_PeriodicNetSettlementsOnInterestRateSwapsIncome</link:label>
    <link:label xlink:label="caty_PeriodicNetSettlementsOnInterestRateSwapsIncome-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Periodic net settlement of SWAPs</link:label>
    <link:label xlink:label="caty_PeriodicNetSettlementsOnInterestRateSwapsIncome-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The amount of income for periodic net settlements on interest rate swaps.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_PeriodicNetSettlementsOnInterestRateSwapsIncome" xlink:to="caty_PeriodicNetSettlementsOnInterestRateSwapsIncome-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_LoansReceivableWithPartialTermHedgingDesignationMember" xlink:label="caty_LoansReceivableWithPartialTermHedgingDesignationMember" xlink:type="locator"/>
    <link:label xlink:label="caty_LoansReceivableWithPartialTermHedgingDesignationMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loans Receivable with Partial-term Hedging Designation [Member]</link:label>
    <link:label xlink:label="caty_LoansReceivableWithPartialTermHedgingDesignationMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents information to loans receivable with partial-term hedging designation.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_LoansReceivableWithPartialTermHedgingDesignationMember" xlink:to="caty_LoansReceivableWithPartialTermHedgingDesignationMember-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures" xlink:label="us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restricted stock units vested</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures" xlink:to="us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_DepositoryServiceFees" xlink:label="caty_DepositoryServiceFees" xlink:type="locator"/>
    <link:label xlink:label="caty_DepositoryServiceFees-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Depository service fees</link:label>
    <link:label xlink:label="caty_DepositoryServiceFees-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The amount of depository service fee income.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_DepositoryServiceFees" xlink:to="caty_DepositoryServiceFees-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_WarrantsAndRightsOutstandingMeasurementInput" xlink:label="us-gaap_WarrantsAndRightsOutstandingMeasurementInput" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_WarrantsAndRightsOutstandingMeasurementInput-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_WarrantsAndRightsOutstandingMeasurementInput</link:label>
    <link:label xlink:label="us-gaap_WarrantsAndRightsOutstandingMeasurementInput-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Warrants and Rights Outstanding, Measurement Input</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WarrantsAndRightsOutstandingMeasurementInput" xlink:to="us-gaap_WarrantsAndRightsOutstandingMeasurementInput-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FederalHomeLoanBankStock" xlink:label="us-gaap_FederalHomeLoanBankStock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_FederalHomeLoanBankStock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Federal Home Loan Bank stock</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FederalHomeLoanBankStock" xlink:to="us-gaap_FederalHomeLoanBankStock-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_LiabilitiesAndStockholdersEquity-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_LiabilitiesAndStockholdersEquity</link:label>
    <link:label xlink:label="us-gaap_LiabilitiesAndStockholdersEquity-label" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total liabilities and equity</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesAndStockholdersEquity" xlink:to="us-gaap_LiabilitiesAndStockholdersEquity-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CarryingReportedAmountFairValueDisclosureMember" xlink:label="us-gaap_CarryingReportedAmountFairValueDisclosureMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_CarryingReportedAmountFairValueDisclosureMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Reported Value Measurement [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CarryingReportedAmountFairValueDisclosureMember" xlink:to="us-gaap_CarryingReportedAmountFairValueDisclosureMember-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Retained earnings</link:label>
    <link:label xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Retained Earnings (Accumulated Deficit), Ending Balance</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RetainedEarningsAccumulatedDeficit" xlink:to="us-gaap_RetainedEarningsAccumulatedDeficit-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accumulated other comprehensive income, net</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:to="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_OperatingLeaseAssetsAndLiabilitiesWeightedAverageRemainingTermsAndDiscountRateTableTextBlock" xlink:label="caty_OperatingLeaseAssetsAndLiabilitiesWeightedAverageRemainingTermsAndDiscountRateTableTextBlock" xlink:type="locator"/>
    <link:label xlink:label="caty_OperatingLeaseAssetsAndLiabilitiesWeightedAverageRemainingTermsAndDiscountRateTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Lease, Assets and Liabilities, Weighted Average Remaining Terms and Discount Rate [Table Text Block]</link:label>
    <link:label xlink:label="caty_OperatingLeaseAssetsAndLiabilitiesWeightedAverageRemainingTermsAndDiscountRateTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Tabular disclosure of operating lease related assets and liabilities and weighted-average remaining lease terms and discount rates.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_OperatingLeaseAssetsAndLiabilitiesWeightedAverageRemainingTermsAndDiscountRateTableTextBlock" xlink:to="caty_OperatingLeaseAssetsAndLiabilitiesWeightedAverageRemainingTermsAndDiscountRateTableTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_FinancingReceivableWithModificationsPercentageOfTotalCommercialRealEstateLoans" xlink:label="caty_FinancingReceivableWithModificationsPercentageOfTotalCommercialRealEstateLoans" xlink:type="locator"/>
    <link:label xlink:label="caty_FinancingReceivableWithModificationsPercentageOfTotalCommercialRealEstateLoans-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">caty_FinancingReceivableWithModificationsPercentageOfTotalCommercialRealEstateLoans</link:label>
    <link:label xlink:label="caty_FinancingReceivableWithModificationsPercentageOfTotalCommercialRealEstateLoans-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financing Receivable with Modifications, Percentage of Total Commercial Real Estate Loans</link:label>
    <link:label xlink:label="caty_FinancingReceivableWithModificationsPercentageOfTotalCommercialRealEstateLoans-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The percentage of financing receivable with modifications to total commercial real estate loans.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_FinancingReceivableWithModificationsPercentageOfTotalCommercialRealEstateLoans" xlink:to="caty_FinancingReceivableWithModificationsPercentageOfTotalCommercialRealEstateLoans-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtDisclosureTextBlock" xlink:label="us-gaap_DebtDisclosureTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DebtDisclosureTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Disclosure [Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtDisclosureTextBlock" xlink:to="us-gaap_DebtDisclosureTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FederalHomeLoanBankAdvancesBranchOfFHLBBankInterestRate" xlink:label="us-gaap_FederalHomeLoanBankAdvancesBranchOfFHLBBankInterestRate" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_FederalHomeLoanBankAdvancesBranchOfFHLBBankInterestRate-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_FederalHomeLoanBankAdvancesBranchOfFHLBBankInterestRate</link:label>
    <link:label xlink:label="us-gaap_FederalHomeLoanBankAdvancesBranchOfFHLBBankInterestRate-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Federal Home Loan Bank, Advances, Branch of FHLB Bank, Interest Rate</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FederalHomeLoanBankAdvancesBranchOfFHLBBankInterestRate" xlink:to="us-gaap_FederalHomeLoanBankAdvancesBranchOfFHLBBankInterestRate-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InterestExpense" xlink:label="us-gaap_InterestExpense" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_InterestExpense-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_InterestExpense</link:label>
    <link:label xlink:label="us-gaap_InterestExpense-label" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total interest expense</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestExpense" xlink:to="us-gaap_InterestExpense-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CashMember" xlink:label="us-gaap_CashMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_CashMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashMember" xlink:to="us-gaap_CashMember-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MeasurementInputPriceVolatilityMember" xlink:label="us-gaap_MeasurementInputPriceVolatilityMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_MeasurementInputPriceVolatilityMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Measurement Input, Price Volatility [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MeasurementInputPriceVolatilityMember" xlink:to="us-gaap_MeasurementInputPriceVolatilityMember-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MeasurementInputRiskFreeInterestRateMember" xlink:label="us-gaap_MeasurementInputRiskFreeInterestRateMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_MeasurementInputRiskFreeInterestRateMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Measurement Input, Risk Free Interest Rate [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MeasurementInputRiskFreeInterestRateMember" xlink:to="us-gaap_MeasurementInputRiskFreeInterestRateMember-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_DebtRedemptionCost" xlink:label="caty_DebtRedemptionCost" xlink:type="locator"/>
    <link:label xlink:label="caty_DebtRedemptionCost-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Costs associated with debt redemption</link:label>
    <link:label xlink:label="caty_DebtRedemptionCost-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the cost associated with debt redemption during the period.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_DebtRedemptionCost" xlink:to="caty_DebtRedemptionCost-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisclosureTextBlockAbstract" xlink:label="us-gaap_DisclosureTextBlockAbstract" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DisclosureTextBlockAbstract-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_DisclosureTextBlockAbstract</link:label>
    <link:label xlink:label="us-gaap_DisclosureTextBlockAbstract-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Notes to Financial Statements</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DisclosureTextBlockAbstract" xlink:to="us-gaap_DisclosureTextBlockAbstract-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock" xlink:label="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative Instruments and Hedging Activities Disclosure [Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock" xlink:to="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventMember" xlink:label="us-gaap_SubsequentEventMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_SubsequentEventMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Subsequent Event [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsequentEventMember" xlink:to="us-gaap_SubsequentEventMember-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseLiability" xlink:label="us-gaap_OperatingLeaseLiability" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_OperatingLeaseLiability-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lease liabilities - operating leases</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseLiability" xlink:to="us-gaap_OperatingLeaseLiability-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventTypeAxis" xlink:label="us-gaap_SubsequentEventTypeAxis" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_SubsequentEventTypeAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Subsequent Event Type [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsequentEventTypeAxis" xlink:to="us-gaap_SubsequentEventTypeAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesLongTerm" xlink:label="us-gaap_InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesLongTerm" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesLongTerm-label" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Advances from Federal Home Loan Bank</link:label>
    <link:label xlink:label="us-gaap_InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesLongTerm-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesLongTerm</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesLongTerm" xlink:to="us-gaap_InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesLongTerm-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CashAndCashEquivalentsDisclosureTextBlock" xlink:label="us-gaap_CashAndCashEquivalentsDisclosureTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_CashAndCashEquivalentsDisclosureTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash and Cash Equivalents Disclosure [Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashAndCashEquivalentsDisclosureTextBlock" xlink:to="us-gaap_CashAndCashEquivalentsDisclosureTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventTypeDomain" xlink:label="us-gaap_SubsequentEventTypeDomain" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_SubsequentEventTypeDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Subsequent Event Type [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsequentEventTypeDomain" xlink:to="us-gaap_SubsequentEventTypeDomain-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InterestExpenseOtherLongTermDebt" xlink:label="us-gaap_InterestExpenseOtherLongTermDebt" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_InterestExpenseOtherLongTermDebt-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_InterestExpenseOtherLongTermDebt</link:label>
    <link:label xlink:label="us-gaap_InterestExpenseOtherLongTermDebt-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long-term debt</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestExpenseOtherLongTermDebt" xlink:to="us-gaap_InterestExpenseOtherLongTermDebt-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_OtherServiceFeesMember" xlink:label="caty_OtherServiceFeesMember" xlink:type="locator"/>
    <link:label xlink:label="caty_OtherServiceFeesMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Service Fees [Member]</link:label>
    <link:label xlink:label="caty_OtherServiceFeesMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the information pertaining to other service fees.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_OtherServiceFeesMember" xlink:to="caty_OtherServiceFeesMember-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeLiabilityFairValueOfCollateral" xlink:label="us-gaap_DerivativeLiabilityFairValueOfCollateral" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DerivativeLiabilityFairValueOfCollateral-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_DerivativeLiabilityFairValueOfCollateral</link:label>
    <link:label xlink:label="us-gaap_DerivativeLiabilityFairValueOfCollateral-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Derivatives, collateral posted</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeLiabilityFairValueOfCollateral" xlink:to="us-gaap_DerivativeLiabilityFairValueOfCollateral-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_WealthManagementFeesMember" xlink:label="caty_WealthManagementFeesMember" xlink:type="locator"/>
    <link:label xlink:label="caty_WealthManagementFeesMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Wealth Management Fees [Member]</link:label>
    <link:label xlink:label="caty_WealthManagementFeesMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the information pertaining to the wealth management fees.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_WealthManagementFeesMember" xlink:to="caty_WealthManagementFeesMember-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventsTextBlock" xlink:label="us-gaap_SubsequentEventsTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_SubsequentEventsTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Subsequent Events [Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsequentEventsTextBlock" xlink:to="us-gaap_SubsequentEventsTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseRightOfUseAsset" xlink:label="us-gaap_OperatingLeaseRightOfUseAsset" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_OperatingLeaseRightOfUseAsset-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Right-of-use assets - operating leases</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseRightOfUseAsset" xlink:to="us-gaap_OperatingLeaseRightOfUseAsset-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_NoninteresIncomeNotInscope" xlink:label="caty_NoninteresIncomeNotInscope" xlink:type="locator"/>
    <link:label xlink:label="caty_NoninteresIncomeNotInscope-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">caty_NoninteresIncomeNotInscope</link:label>
    <link:label xlink:label="caty_NoninteresIncomeNotInscope-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Noninterest income, not in-scope(2)</link:label>
    <link:label xlink:label="caty_NoninteresIncomeNotInscope-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount of noninterest income that are out of the scope of ASC 606.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_NoninteresIncomeNotInscope" xlink:to="caty_NoninteresIncomeNotInscope-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue</link:label>
    <link:label xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue-label" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total lease payments</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_AverageSharesOfStockOptionsAndRestrictedStockUnitsWithAntiDilutiveEffect" xlink:label="caty_AverageSharesOfStockOptionsAndRestrictedStockUnitsWithAntiDilutiveEffect" xlink:type="locator"/>
    <link:label xlink:label="caty_AverageSharesOfStockOptionsAndRestrictedStockUnitsWithAntiDilutiveEffect-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Average restricted stock units with anti-dilutive effect (in shares)</link:label>
    <link:label xlink:label="caty_AverageSharesOfStockOptionsAndRestrictedStockUnitsWithAntiDilutiveEffect-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the average shares of stock options and restricted stock units with anti-dilutive effect.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_AverageSharesOfStockOptionsAndRestrictedStockUnitsWithAntiDilutiveEffect" xlink:to="caty_AverageSharesOfStockOptionsAndRestrictedStockUnitsWithAntiDilutiveEffect-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount</link:label>
    <link:label xlink:label="us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Less amount of payment representing interest</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InterestExpenseShortTermBorrowingsExcludingFederalFundsAndSecuritiesSoldUnderAgreementsToRepurchase" xlink:label="us-gaap_InterestExpenseShortTermBorrowingsExcludingFederalFundsAndSecuritiesSoldUnderAgreementsToRepurchase" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_InterestExpenseShortTermBorrowingsExcludingFederalFundsAndSecuritiesSoldUnderAgreementsToRepurchase-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_InterestExpenseShortTermBorrowingsExcludingFederalFundsAndSecuritiesSoldUnderAgreementsToRepurchase</link:label>
    <link:label xlink:label="us-gaap_InterestExpenseShortTermBorrowingsExcludingFederalFundsAndSecuritiesSoldUnderAgreementsToRepurchase-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Short-term borrowings</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestExpenseShortTermBorrowingsExcludingFederalFundsAndSecuritiesSoldUnderAgreementsToRepurchase" xlink:to="us-gaap_InterestExpenseShortTermBorrowingsExcludingFederalFundsAndSecuritiesSoldUnderAgreementsToRepurchase-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MeasurementInputTypeAxis" xlink:label="us-gaap_MeasurementInputTypeAxis" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_MeasurementInputTypeAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Measurement Input Type [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MeasurementInputTypeAxis" xlink:to="us-gaap_MeasurementInputTypeAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SalariesWagesAndOfficersCompensation" xlink:label="us-gaap_SalariesWagesAndOfficersCompensation" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_SalariesWagesAndOfficersCompensation-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Salaries and employee benefits</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SalariesWagesAndOfficersCompensation" xlink:to="us-gaap_SalariesWagesAndOfficersCompensation-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree</link:label>
    <link:label xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2024</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MeasurementInputTypeDomain" xlink:label="us-gaap_MeasurementInputTypeDomain" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_MeasurementInputTypeDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Measurement Input Type [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MeasurementInputTypeDomain" xlink:to="us-gaap_MeasurementInputTypeDomain-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour</link:label>
    <link:label xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2025</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive</link:label>
    <link:label xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2025</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_BenefitShortfallOfTaxDeductionsFromSharebasedCompensation" xlink:label="caty_BenefitShortfallOfTaxDeductionsFromSharebasedCompensation" xlink:type="locator"/>
    <link:label xlink:label="caty_BenefitShortfallOfTaxDeductionsFromSharebasedCompensation-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">caty_BenefitShortfallOfTaxDeductionsFromSharebasedCompensation</link:label>
    <link:label xlink:label="caty_BenefitShortfallOfTaxDeductionsFromSharebasedCompensation-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Benefit (Shortfall) of Tax Deductions from Share-based Compensation</link:label>
    <link:label xlink:label="caty_BenefitShortfallOfTaxDeductionsFromSharebasedCompensation-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The expense resulting from the benefit (short-fall) of tax deductions from share-based compensation, in excess of grant-date fair value.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_BenefitShortfallOfTaxDeductionsFromSharebasedCompensation" xlink:to="caty_BenefitShortfallOfTaxDeductionsFromSharebasedCompensation-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths</link:label>
    <link:label xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2022</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo</link:label>
    <link:label xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2023</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InterestExpenseTimeDeposits" xlink:label="us-gaap_InterestExpenseTimeDeposits" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_InterestExpenseTimeDeposits-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_InterestExpenseTimeDeposits</link:label>
    <link:label xlink:label="us-gaap_InterestExpenseTimeDeposits-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Time deposits</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestExpenseTimeDeposits" xlink:to="us-gaap_InterestExpenseTimeDeposits-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InterestExpenseOtherDomesticDeposits" xlink:label="us-gaap_InterestExpenseOtherDomesticDeposits" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_InterestExpenseOtherDomesticDeposits-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_InterestExpenseOtherDomesticDeposits</link:label>
    <link:label xlink:label="us-gaap_InterestExpenseOtherDomesticDeposits-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other deposits</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestExpenseOtherDomesticDeposits" xlink:to="us-gaap_InterestExpenseOtherDomesticDeposits-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ValuationAllowancesAndReservesDomain" xlink:label="us-gaap_ValuationAllowancesAndReservesDomain" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ValuationAllowancesAndReservesDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">SEC Schedule, 12-09, Valuation Allowances and Reserves [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ValuationAllowancesAndReservesDomain" xlink:to="us-gaap_ValuationAllowancesAndReservesDomain-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_BankMember" xlink:label="caty_BankMember" xlink:type="locator"/>
    <link:label xlink:label="caty_BankMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Bank [Member]</link:label>
    <link:label xlink:label="caty_BankMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Information relating to the Bank</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_BankMember" xlink:to="caty_BankMember-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_NetAmountOfDerivativeLiabilitiesPresentedInTheBalanceSheet" xlink:label="caty_NetAmountOfDerivativeLiabilitiesPresentedInTheBalanceSheet" xlink:type="locator"/>
    <link:label xlink:label="caty_NetAmountOfDerivativeLiabilitiesPresentedInTheBalanceSheet-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative liabilities, net</link:label>
    <link:label xlink:label="caty_NetAmountOfDerivativeLiabilitiesPresentedInTheBalanceSheet-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">This item represented the net amount of derivative liabilities presented in the balance sheet after offsetting.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_NetAmountOfDerivativeLiabilitiesPresentedInTheBalanceSheet" xlink:to="caty_NetAmountOfDerivativeLiabilitiesPresentedInTheBalanceSheet-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Operating Lease, Liability, Maturity [Table Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ValuationAllowancesAndReservesTypeAxis" xlink:label="us-gaap_ValuationAllowancesAndReservesTypeAxis" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ValuationAllowancesAndReservesTypeAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">SEC Schedule, 12-09, Valuation Allowances and Reserves Type [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ValuationAllowancesAndReservesTypeAxis" xlink:to="us-gaap_ValuationAllowancesAndReservesTypeAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EmployeeBenefitsAndShareBasedCompensationNoncash" xlink:label="us-gaap_EmployeeBenefitsAndShareBasedCompensationNoncash" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_EmployeeBenefitsAndShareBasedCompensationNoncash-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stock based compensation and stock issued to officers as compensation</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EmployeeBenefitsAndShareBasedCompensationNoncash" xlink:to="us-gaap_EmployeeBenefitsAndShareBasedCompensationNoncash-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear</link:label>
    <link:label xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Remaining 2021</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InterestExpenseAbstract" xlink:label="us-gaap_InterestExpenseAbstract" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_InterestExpenseAbstract-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest Expense</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestExpenseAbstract" xlink:to="us-gaap_InterestExpenseAbstract-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_FeesAndServicesChargesOnDepositAccountMember" xlink:label="caty_FeesAndServicesChargesOnDepositAccountMember" xlink:type="locator"/>
    <link:label xlink:label="caty_FeesAndServicesChargesOnDepositAccountMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fees and Services Charges on Deposit Account [Member]</link:label>
    <link:label xlink:label="caty_FeesAndServicesChargesOnDepositAccountMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the information pertaining to fees and services charges on deposit accounts.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_FeesAndServicesChargesOnDepositAccountMember" xlink:to="caty_FeesAndServicesChargesOnDepositAccountMember-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsFairValueDisclosure" xlink:label="us-gaap_AssetsFairValueDisclosure" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_AssetsFairValueDisclosure-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Assets, fair value disclosure</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetsFairValueDisclosure" xlink:to="us-gaap_AssetsFairValueDisclosure-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InterestAndDividendIncomeOperating" xlink:label="us-gaap_InterestAndDividendIncomeOperating" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_InterestAndDividendIncomeOperating-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_InterestAndDividendIncomeOperating</link:label>
    <link:label xlink:label="us-gaap_InterestAndDividendIncomeOperating-label" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total interest and dividend income</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestAndDividendIncomeOperating" xlink:to="us-gaap_InterestAndDividendIncomeOperating-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments" xlink:label="us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments</link:label>
    <link:label xlink:label="us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Amortization/accretion of security premiums/discounts, net</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments" xlink:to="us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InterestIncomeDepositsWithFinancialInstitutions" xlink:label="us-gaap_InterestIncomeDepositsWithFinancialInstitutions" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_InterestIncomeDepositsWithFinancialInstitutions-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deposits with banks</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestIncomeDepositsWithFinancialInstitutions" xlink:to="us-gaap_InterestIncomeDepositsWithFinancialInstitutions-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_AffordableHousingInvestmentsAndAlternativeEnergyPartnershipsNet" xlink:label="caty_AffordableHousingInvestmentsAndAlternativeEnergyPartnershipsNet" xlink:type="locator"/>
    <link:label xlink:label="caty_AffordableHousingInvestmentsAndAlternativeEnergyPartnershipsNet-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Affordable housing investments and alternative energy partnerships, net</link:label>
    <link:label xlink:label="caty_AffordableHousingInvestmentsAndAlternativeEnergyPartnershipsNet-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount of investments in affordable housing and alternative energy partnerships.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_AffordableHousingInvestmentsAndAlternativeEnergyPartnershipsNet" xlink:to="caty_AffordableHousingInvestmentsAndAlternativeEnergyPartnershipsNet-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DepreciationDepletionAndAmortization" xlink:label="us-gaap_DepreciationDepletionAndAmortization" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DepreciationDepletionAndAmortization-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_DepreciationDepletionAndAmortization</link:label>
    <link:label xlink:label="us-gaap_DepreciationDepletionAndAmortization-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Depreciation and amortization</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DepreciationDepletionAndAmortization" xlink:to="us-gaap_DepreciationDepletionAndAmortization-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilitiesFairValueDisclosure" xlink:label="us-gaap_LiabilitiesFairValueDisclosure" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_LiabilitiesFairValueDisclosure-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liabilities, fair value disclosure</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesFairValueDisclosure" xlink:to="us-gaap_LiabilitiesFairValueDisclosure-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FederalHomeLoanBankBorrowingsFairValueDisclosure" xlink:label="us-gaap_FederalHomeLoanBankBorrowingsFairValueDisclosure" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_FederalHomeLoanBankBorrowingsFairValueDisclosure-label" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Advances from Federal Home Loan Bank</link:label>
    <link:label xlink:label="us-gaap_FederalHomeLoanBankBorrowingsFairValueDisclosure-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_FederalHomeLoanBankBorrowingsFairValueDisclosure</link:label>
    <link:label xlink:label="us-gaap_FederalHomeLoanBankBorrowingsFairValueDisclosure-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Advances from Federal Home Loan Bank</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FederalHomeLoanBankBorrowingsFairValueDisclosure" xlink:to="us-gaap_FederalHomeLoanBankBorrowingsFairValueDisclosure-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CashAndCashEquivalentsFairValueDisclosure" xlink:label="us-gaap_CashAndCashEquivalentsFairValueDisclosure" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_CashAndCashEquivalentsFairValueDisclosure-label" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Cash and due from banks</link:label>
    <link:label xlink:label="us-gaap_CashAndCashEquivalentsFairValueDisclosure-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_CashAndCashEquivalentsFairValueDisclosure</link:label>
    <link:label xlink:label="us-gaap_CashAndCashEquivalentsFairValueDisclosure-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash and due from banks</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashAndCashEquivalentsFairValueDisclosure" xlink:to="us-gaap_CashAndCashEquivalentsFairValueDisclosure-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockholdersEquityNoteDisclosureTextBlock" xlink:label="us-gaap_StockholdersEquityNoteDisclosureTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_StockholdersEquityNoteDisclosureTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stockholders' Equity Note Disclosure [Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquityNoteDisclosureTextBlock" xlink:to="us-gaap_StockholdersEquityNoteDisclosureTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InterestIncomeSecuritiesTaxable" xlink:label="us-gaap_InterestIncomeSecuritiesTaxable" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_InterestIncomeSecuritiesTaxable-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Investment securities</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestIncomeSecuritiesTaxable" xlink:to="us-gaap_InterestIncomeSecuritiesTaxable-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TreasuryStockShares" xlink:label="us-gaap_TreasuryStockShares" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_TreasuryStockShares-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Treasury stock shares (in shares)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TreasuryStockShares" xlink:to="us-gaap_TreasuryStockShares-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementsNonrecurringMember" xlink:label="us-gaap_FairValueMeasurementsNonrecurringMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_FairValueMeasurementsNonrecurringMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Nonrecurring [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueMeasurementsNonrecurringMember" xlink:to="us-gaap_FairValueMeasurementsNonrecurringMember-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_LoansAndLeasesReceivableForgiven" xlink:label="caty_LoansAndLeasesReceivableForgiven" xlink:type="locator"/>
    <link:label xlink:label="caty_LoansAndLeasesReceivableForgiven-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">caty_LoansAndLeasesReceivableForgiven</link:label>
    <link:label xlink:label="caty_LoansAndLeasesReceivableForgiven-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loans and Leases Receivable, Forgiven</link:label>
    <link:label xlink:label="caty_LoansAndLeasesReceivableForgiven-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">With regard to loans and leases receivable, this element represents the amount that has been forgiven.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_LoansAndLeasesReceivableForgiven" xlink:to="caty_LoansAndLeasesReceivableForgiven-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommonStockValue" xlink:label="us-gaap_CommonStockValue" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_CommonStockValue-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common stock, $0.01 par value, 100,000,000 shares authorized; 90,729,966 issued and 79,595,025 outstanding at March 31, 2021, and 90,643,206 issued and 79,508,265 outstanding at December 31, 2020</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockValue" xlink:to="us-gaap_CommonStockValue-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Adjustments to reconcile net income to net cash provided by operating activities:</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByMeasurementFrequencyAxis" xlink:label="us-gaap_FairValueByMeasurementFrequencyAxis" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_FairValueByMeasurementFrequencyAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Measurement Frequency [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueByMeasurementFrequencyAxis" xlink:to="us-gaap_FairValueByMeasurementFrequencyAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain" xlink:label="us-gaap_FairValueMeasurementFrequencyDomain" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_FairValueMeasurementFrequencyDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Measurement Frequency [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueMeasurementFrequencyDomain" xlink:to="us-gaap_FairValueMeasurementFrequencyDomain-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InterestAndFeeIncomeLoansAndLeases" xlink:label="us-gaap_InterestAndFeeIncomeLoansAndLeases" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_InterestAndFeeIncomeLoansAndLeases-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loans receivable, including loan fees</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestAndFeeIncomeLoansAndLeases" xlink:to="us-gaap_InterestAndFeeIncomeLoansAndLeases-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommonStockSharesAuthorized" xlink:label="us-gaap_CommonStockSharesAuthorized" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_CommonStockSharesAuthorized-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common stock shares authorized (in shares)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockSharesAuthorized" xlink:to="us-gaap_CommonStockSharesAuthorized-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommonStockSharesIssued" xlink:label="us-gaap_CommonStockSharesIssued" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_CommonStockSharesIssued-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common stock, shares issued (in shares)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockSharesIssued" xlink:to="us-gaap_CommonStockSharesIssued-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommonStockParOrStatedValuePerShare" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_CommonStockParOrStatedValuePerShare-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common stock par value (in dollars per share)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockParOrStatedValuePerShare" xlink:to="us-gaap_CommonStockParOrStatedValuePerShare-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember" xlink:label="srt_RangeMember" xlink:type="locator"/>
    <link:label xlink:label="srt_RangeMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statistical Measurement [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_RangeMember" xlink:to="srt_RangeMember-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeasePayments" xlink:label="us-gaap_OperatingLeasePayments" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_OperatingLeasePayments-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_OperatingLeasePayments</link:label>
    <link:label xlink:label="us-gaap_OperatingLeasePayments-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Operating Lease, Payments</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeasePayments" xlink:to="us-gaap_OperatingLeasePayments-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MaximumMember" xlink:label="srt_MaximumMember" xlink:type="locator"/>
    <link:label xlink:label="srt_MaximumMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Maximum [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_MaximumMember" xlink:to="srt_MaximumMember-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MinimumMember" xlink:label="srt_MinimumMember" xlink:type="locator"/>
    <link:label xlink:label="srt_MinimumMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Minimum [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_MinimumMember" xlink:to="srt_MinimumMember-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ProductOrServiceAxis" xlink:label="srt_ProductOrServiceAxis" xlink:type="locator"/>
    <link:label xlink:label="srt_ProductOrServiceAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Product and Service [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_ProductOrServiceAxis" xlink:to="srt_ProductOrServiceAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredTaxAssetsNet" xlink:label="us-gaap_DeferredTaxAssetsNet" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DeferredTaxAssetsNet-label" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Deferred tax assets</link:label>
    <link:label xlink:label="us-gaap_DeferredTaxAssetsNet-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_DeferredTaxAssetsNet</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxAssetsNet" xlink:to="us-gaap_DeferredTaxAssetsNet-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ProductsAndServicesDomain" xlink:label="srt_ProductsAndServicesDomain" xlink:type="locator"/>
    <link:label xlink:label="srt_ProductsAndServicesDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Product and Service [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_ProductsAndServicesDomain" xlink:to="srt_ProductsAndServicesDomain-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeAxis" xlink:label="srt_RangeAxis" xlink:type="locator"/>
    <link:label xlink:label="srt_RangeAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statistical Measurement [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_RangeAxis" xlink:to="srt_RangeAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InterestAndFeeIncomeLoansAndLeasesAbstract" xlink:label="us-gaap_InterestAndFeeIncomeLoansAndLeasesAbstract" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_InterestAndFeeIncomeLoansAndLeasesAbstract-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest and Dividend Income</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestAndFeeIncomeLoansAndLeasesAbstract" xlink:to="us-gaap_InterestAndFeeIncomeLoansAndLeasesAbstract-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_ProvisionReversalForLossesOnOtherRealEstateOwned" xlink:label="caty_ProvisionReversalForLossesOnOtherRealEstateOwned" xlink:type="locator"/>
    <link:label xlink:label="caty_ProvisionReversalForLossesOnOtherRealEstateOwned-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">caty_ProvisionReversalForLossesOnOtherRealEstateOwned</link:label>
    <link:label xlink:label="caty_ProvisionReversalForLossesOnOtherRealEstateOwned-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Provision for losses on other real estate owned</link:label>
    <link:label xlink:label="caty_ProvisionReversalForLossesOnOtherRealEstateOwned-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount of provision (reversal) related to other real estate owned based on the assessment of uncollectability from the counterparty to reduce the account to their net realizable value.</link:label>
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    <link:label xlink:label="us-gaap_InterestPaidNet-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestPaidNet" xlink:to="us-gaap_InterestPaidNet-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxesPaid" xlink:label="us-gaap_IncomeTaxesPaid" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_IncomeTaxesPaid-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income taxes paid</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxesPaid" xlink:to="us-gaap_IncomeTaxesPaid-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_StatementGeographicalAxis" xlink:label="srt_StatementGeographicalAxis" xlink:type="locator"/>
    <link:label xlink:label="srt_StatementGeographicalAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Geographical [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_StatementGeographicalAxis" xlink:to="srt_StatementGeographicalAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="srt_SegmentGeographicalDomain" xlink:type="locator"/>
    <link:label xlink:label="srt_SegmentGeographicalDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Geographical [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_SegmentGeographicalDomain" xlink:to="srt_SegmentGeographicalDomain-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember" xlink:label="us-gaap_PortionAtFairValueFairValueDisclosureMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_PortionAtFairValueFairValueDisclosureMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Portion at Fair Value Measurement [Member] [Default]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PortionAtFairValueFairValueDisclosureMember" xlink:to="us-gaap_PortionAtFairValueFairValueDisclosureMember-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EstimateOfFairValueFairValueDisclosureMember" xlink:label="us-gaap_EstimateOfFairValueFairValueDisclosureMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_EstimateOfFairValueFairValueDisclosureMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Estimate of Fair Value Measurement [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EstimateOfFairValueFairValueDisclosureMember" xlink:to="us-gaap_EstimateOfFairValueFairValueDisclosureMember-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NoninterestIncomeOtherOperatingIncome" xlink:label="us-gaap_NoninterestIncomeOtherOperatingIncome" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_NoninterestIncomeOtherOperatingIncome-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other operating income</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NoninterestIncomeOtherOperatingIncome" xlink:to="us-gaap_NoninterestIncomeOtherOperatingIncome-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NoninterestIncome" xlink:label="us-gaap_NoninterestIncome" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_NoninterestIncome-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_NoninterestIncome</link:label>
    <link:label xlink:label="us-gaap_NoninterestIncome-label" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total non-interest income</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NoninterestIncome" xlink:to="us-gaap_NoninterestIncome-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax" xlink:label="us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax</link:label>
    <link:label xlink:label="us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Revenues</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax" xlink:to="us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByMeasurementBasisAxis" xlink:label="us-gaap_FairValueByMeasurementBasisAxis" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_FairValueByMeasurementBasisAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Measurement Basis [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueByMeasurementBasisAxis" xlink:to="us-gaap_FairValueByMeasurementBasisAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueInputsLevel3Member" xlink:label="us-gaap_FairValueInputsLevel3Member" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_FairValueInputsLevel3Member-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Inputs, Level 3 [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueInputsLevel3Member" xlink:to="us-gaap_FairValueInputsLevel3Member-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_NetIncreaseInInvestmentInAffordableHousingInvestingAndAlternativeEnergyPartnerships" xlink:label="caty_NetIncreaseInInvestmentInAffordableHousingInvestingAndAlternativeEnergyPartnerships" xlink:type="locator"/>
    <link:label xlink:label="caty_NetIncreaseInInvestmentInAffordableHousingInvestingAndAlternativeEnergyPartnerships-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">caty_NetIncreaseInInvestmentInAffordableHousingInvestingAndAlternativeEnergyPartnerships</link:label>
    <link:label xlink:label="caty_NetIncreaseInInvestmentInAffordableHousingInvestingAndAlternativeEnergyPartnerships-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Net increase in investment in affordable housing and alternative energy partnerships</link:label>
    <link:label xlink:label="caty_NetIncreaseInInvestmentInAffordableHousingInvestingAndAlternativeEnergyPartnerships-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount of net increase (decrease) in investment in affordable housing and alternative energy partnerships during the period.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_NetIncreaseInInvestmentInAffordableHousingInvestingAndAlternativeEnergyPartnerships" xlink:to="caty_NetIncreaseInInvestmentInAffordableHousingInvestingAndAlternativeEnergyPartnerships-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd#stpr_IL" xlink:label="stpr_IL" xlink:type="locator"/>
    <link:label xlink:label="stpr_IL-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">ILLINOIS</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="stpr_IL" xlink:to="stpr_IL-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_FairValueMeasurementsFairValueHierarchyDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value Hierarchy and NAV [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:to="us-gaap_FairValueMeasurementsFairValueHierarchyDomain-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueInputsLevel1Member" xlink:label="us-gaap_FairValueInputsLevel1Member" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_FairValueInputsLevel1Member-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Inputs, Level 1 [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueInputsLevel1Member" xlink:to="us-gaap_FairValueInputsLevel1Member-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueInputsLevel2Member" xlink:label="us-gaap_FairValueInputsLevel2Member" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_FairValueInputsLevel2Member-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Inputs, Level 2 [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueInputsLevel2Member" xlink:to="us-gaap_FairValueInputsLevel2Member-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NoninterestIncomeAbstract" xlink:label="us-gaap_NoninterestIncomeAbstract" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_NoninterestIncomeAbstract-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Non-Interest Income</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NoninterestIncomeAbstract" xlink:to="us-gaap_NoninterestIncomeAbstract-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_LesseeOperatingLeaseLiabilityToBePaidAfterYearFour" xlink:label="caty_LesseeOperatingLeaseLiabilityToBePaidAfterYearFour" xlink:type="locator"/>
    <link:label xlink:label="caty_LesseeOperatingLeaseLiabilityToBePaidAfterYearFour-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">caty_LesseeOperatingLeaseLiabilityToBePaidAfterYearFour</link:label>
    <link:label xlink:label="caty_LesseeOperatingLeaseLiabilityToBePaidAfterYearFour-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Thereafter</link:label>
    <link:label xlink:label="caty_LesseeOperatingLeaseLiabilityToBePaidAfterYearFour-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount of lessee's undiscounted obligation for lease payment for operating lease due after fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_LesseeOperatingLeaseLiabilityToBePaidAfterYearFour" xlink:to="caty_LesseeOperatingLeaseLiabilityToBePaidAfterYearFour-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd#stpr_MA" xlink:label="stpr_MA" xlink:type="locator"/>
    <link:label xlink:label="stpr_MA-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">MASSACHUSETTS</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="stpr_MA" xlink:to="stpr_MA-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd#stpr_MD" xlink:label="stpr_MD" xlink:type="locator"/>
    <link:label xlink:label="stpr_MD-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">MARYLAND</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="stpr_MD" xlink:to="stpr_MD-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_FairValueByFairValueHierarchyLevelAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value Hierarchy and NAV [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:to="us-gaap_FairValueByFairValueHierarchyLevelAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_PercentageOfSubsidiariesCommonSecuritiesOwnedByParentCompany" xlink:label="caty_PercentageOfSubsidiariesCommonSecuritiesOwnedByParentCompany" xlink:type="locator"/>
    <link:label xlink:label="caty_PercentageOfSubsidiariesCommonSecuritiesOwnedByParentCompany-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">caty_PercentageOfSubsidiariesCommonSecuritiesOwnedByParentCompany</link:label>
    <link:label xlink:label="caty_PercentageOfSubsidiariesCommonSecuritiesOwnedByParentCompany-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Percentage of Subsidiaries Common Securities Owned by Parent Company</link:label>
    <link:label xlink:label="caty_PercentageOfSubsidiariesCommonSecuritiesOwnedByParentCompany-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Percentage of subsidiaries common securities owned by parent company.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_PercentageOfSubsidiariesCommonSecuritiesOwnedByParentCompany" xlink:to="caty_PercentageOfSubsidiariesCommonSecuritiesOwnedByParentCompany-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss" xlink:label="us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss</link:label>
    <link:label xlink:label="us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss-label" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net interest income after provision for credit losses</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss" xlink:to="us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProvisionForLoanLossesExpensed" xlink:label="us-gaap_ProvisionForLoanLossesExpensed" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ProvisionForLoanLossesExpensed-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_ProvisionForLoanLossesExpensed</link:label>
    <link:label xlink:label="us-gaap_ProvisionForLoanLossesExpensed-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Provision/(reversal) for possible credit losses</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProvisionForLoanLossesExpensed" xlink:to="us-gaap_ProvisionForLoanLossesExpensed-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProvisionForLoanAndLeaseLosses" xlink:label="us-gaap_ProvisionForLoanAndLeaseLosses" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ProvisionForLoanAndLeaseLosses-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Provision for credit losses</link:label>
    <link:label xlink:label="us-gaap_ProvisionForLoanAndLeaseLosses-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Provision for credit losses</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProvisionForLoanAndLeaseLosses" xlink:to="us-gaap_ProvisionForLoanAndLeaseLosses-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionDomain" xlink:label="srt_CumulativeEffectPeriodOfAdoptionDomain" xlink:type="locator"/>
    <link:label xlink:label="srt_CumulativeEffectPeriodOfAdoptionDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cumulative Effect, Period of Adoption [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_CumulativeEffectPeriodOfAdoptionDomain" xlink:to="srt_CumulativeEffectPeriodOfAdoptionDomain-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd#stpr_NJ" xlink:label="stpr_NJ" xlink:type="locator"/>
    <link:label xlink:label="stpr_NJ-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">NEW JERSEY</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="stpr_NJ" xlink:to="stpr_NJ-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionAxis" xlink:label="srt_CumulativeEffectPeriodOfAdoptionAxis" xlink:type="locator"/>
    <link:label xlink:label="srt_CumulativeEffectPeriodOfAdoptionAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cumulative Effect, Period of Adoption [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_CumulativeEffectPeriodOfAdoptionAxis" xlink:to="srt_CumulativeEffectPeriodOfAdoptionAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InterestIncomeExpenseNet" xlink:label="us-gaap_InterestIncomeExpenseNet" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_InterestIncomeExpenseNet-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_InterestIncomeExpenseNet</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestIncomeExpenseNet" xlink:to="us-gaap_InterestIncomeExpenseNet-label" xlink:type="arc"/>
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    <link:loc xlink:href="https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd#stpr_NV" xlink:label="stpr_NV" xlink:type="locator"/>
    <link:label xlink:label="stpr_NV-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">NEVADA</link:label>
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    <link:label xlink:label="srt_CumulativeEffectPeriodOfAdoptionAdjustedBalanceMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cumulative Effect, Period of Adoption, Adjusted Balance [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_CumulativeEffectPeriodOfAdoptionAdjustedBalanceMember" xlink:to="srt_CumulativeEffectPeriodOfAdoptionAdjustedBalanceMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd#stpr_NY" xlink:label="stpr_NY" xlink:type="locator"/>
    <link:label xlink:label="stpr_NY-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">NEW YORK</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="stpr_NY" xlink:to="stpr_NY-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash Flows from Operating Activities</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_AverageReserveBalancesRequiredToBeMaintainedWithFederalBank" xlink:label="caty_AverageReserveBalancesRequiredToBeMaintainedWithFederalBank" xlink:type="locator"/>
    <link:label xlink:label="caty_AverageReserveBalancesRequiredToBeMaintainedWithFederalBank-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">caty_AverageReserveBalancesRequiredToBeMaintainedWithFederalBank</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="us-gaap_StatementLineItems" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_StatementLineItems-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement [Line Items]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_StatementLineItems-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd#stpr_TX" xlink:label="stpr_TX" xlink:type="locator"/>
    <link:label xlink:label="stpr_TX-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">TEXAS</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="stpr_TX" xlink:to="stpr_TX-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdditionalPaidInCapital" xlink:label="us-gaap_AdditionalPaidInCapital" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_AdditionalPaidInCapital-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Additional paid-in-capital</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdditionalPaidInCapital" xlink:to="us-gaap_AdditionalPaidInCapital-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember" xlink:label="us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember" xlink:to="us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd#stpr_WA" xlink:label="stpr_WA" xlink:type="locator"/>
    <link:label xlink:label="stpr_WA-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">WASHINGTON</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="stpr_WA" xlink:to="stpr_WA-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember" xlink:label="us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember" xlink:to="us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">AOCI Attributable to Parent [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:to="us-gaap_AccumulatedOtherComprehensiveIncomeMember-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShortTermInvestments" xlink:label="us-gaap_ShortTermInvestments" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ShortTermInvestments-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_ShortTermInvestments</link:label>
    <link:label xlink:label="us-gaap_ShortTermInvestments-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Short-term investments</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShortTermInvestments" xlink:to="us-gaap_ShortTermInvestments-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockholdersEquityAbstract" xlink:label="us-gaap_StockholdersEquityAbstract" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_StockholdersEquityAbstract-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stockholders&#8217; Equity</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquityAbstract" xlink:to="us-gaap_StockholdersEquityAbstract-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentInFederalHomeLoanBankStockFairValueDisclosure" xlink:label="us-gaap_InvestmentInFederalHomeLoanBankStockFairValueDisclosure" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_InvestmentInFederalHomeLoanBankStockFairValueDisclosure-label" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Investment in Federal Home Loan Bank stock</link:label>
    <link:label xlink:label="us-gaap_InvestmentInFederalHomeLoanBankStockFairValueDisclosure-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_InvestmentInFederalHomeLoanBankStockFairValueDisclosure</link:label>
    <link:label xlink:label="us-gaap_InvestmentInFederalHomeLoanBankStockFairValueDisclosure-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Investment in Federal Home Loan Bank stock</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InvestmentInFederalHomeLoanBankStockFairValueDisclosure" xlink:to="us-gaap_InvestmentInFederalHomeLoanBankStockFairValueDisclosure-label" xlink:type="arc"/>
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    <link:label xlink:label="us-gaap_LoansReceivableFairValueDisclosure-label" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Loans, net</link:label>
    <link:label xlink:label="us-gaap_LoansReceivableFairValueDisclosure-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_LoansReceivableFairValueDisclosure</link:label>
    <link:label xlink:label="us-gaap_LoansReceivableFairValueDisclosure-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loans, net</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LoansReceivableFairValueDisclosure" xlink:to="us-gaap_LoansReceivableFairValueDisclosure-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueDisclosuresTextBlock" xlink:label="us-gaap_FairValueDisclosuresTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_FairValueDisclosuresTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value Disclosures [Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueDisclosuresTextBlock" xlink:to="us-gaap_FairValueDisclosuresTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByBalanceSheetGroupingTextBlock" xlink:label="us-gaap_FairValueByBalanceSheetGroupingTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_FairValueByBalanceSheetGroupingTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, by Balance Sheet Grouping [Table Text Block]</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MarginDepositAssets" xlink:label="us-gaap_MarginDepositAssets" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_MarginDepositAssets-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_MarginDepositAssets</link:label>
    <link:label xlink:label="us-gaap_MarginDepositAssets-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Margin Deposit Assets</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MarginDepositAssets" xlink:to="us-gaap_MarginDepositAssets-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations</link:label>
    <link:label xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations-label" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Cash, cash equivalents, and restricted cash, beginning of the period</link:label>
    <link:label xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations-label" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Cash, cash equivalents, and restricted cash, end of the period</link:label>
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    <link:label xlink:label="us-gaap_AssetsAbstract-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Assets</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetsAbstract" xlink:to="us-gaap_AssetsAbstract-label" xlink:type="arc"/>
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    <link:label xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect-label" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Decrease in cash, cash equivalents, and restricted cash</link:label>
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    <link:label xlink:label="us-gaap_Liabilities-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_Liabilities</link:label>
    <link:label xlink:label="us-gaap_Liabilities-label" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total liabilities</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Liabilities" xlink:to="us-gaap_Liabilities-label" xlink:type="arc"/>
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    <link:label xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_NetCashProvidedByUsedInFinancingActivities</link:label>
    <link:label xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities-label" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net cash provided by financing activities</link:label>
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    <link:label xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_NetCashProvidedByUsedInOperatingActivities</link:label>
    <link:label xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities-label" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net cash provided by operating activities</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivities-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_PreferredStockOfGovernmentSponsoredEntitiesMember" xlink:label="caty_PreferredStockOfGovernmentSponsoredEntitiesMember" xlink:type="locator"/>
    <link:label xlink:label="caty_PreferredStockOfGovernmentSponsoredEntitiesMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Preferred Stock of Government Sponsored Entities [Member]</link:label>
    <link:label xlink:label="caty_PreferredStockOfGovernmentSponsoredEntitiesMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">This item represents investments in preferred stock of government sponsored entities.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_PreferredStockOfGovernmentSponsoredEntitiesMember" xlink:to="caty_PreferredStockOfGovernmentSponsoredEntitiesMember-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherLiabilities" xlink:label="us-gaap_OtherLiabilities" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_OtherLiabilities-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other liabilities</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherLiabilities" xlink:to="us-gaap_OtherLiabilities-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_NetCashProvidedByUsedInInvestingActivities</link:label>
    <link:label xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities-label" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net cash used for investing activities</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:to="us-gaap_NetCashProvidedByUsedInInvestingActivities-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_OtherEquitySecuritiesMember" xlink:label="caty_OtherEquitySecuritiesMember" xlink:type="locator"/>
    <link:label xlink:label="caty_OtherEquitySecuritiesMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Equity Securities [Member]</link:label>
    <link:label xlink:label="caty_OtherEquitySecuritiesMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Equity securities not otherwise classified.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_OtherEquitySecuritiesMember" xlink:to="caty_OtherEquitySecuritiesMember-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_MutualFundsMember" xlink:label="caty_MutualFundsMember" xlink:type="locator"/>
    <link:label xlink:label="caty_MutualFundsMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Mutual Funds [Member]</link:label>
    <link:label xlink:label="caty_MutualFundsMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents mutual funds.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_MutualFundsMember" xlink:to="caty_MutualFundsMember-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ChangeInUnrealizedGainLossOnFairValueHedgingInstruments1" xlink:label="us-gaap_ChangeInUnrealizedGainLossOnFairValueHedgingInstruments1" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ChangeInUnrealizedGainLossOnFairValueHedgingInstruments1-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net change in unrealized holding loss on cash flow hedge derivatives</link:label>
    <link:label xlink:label="us-gaap_ChangeInUnrealizedGainLossOnFairValueHedgingInstruments1-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net unrealized loss</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ChangeInUnrealizedGainLossOnFairValueHedgingInstruments1" xlink:to="us-gaap_ChangeInUnrealizedGainLossOnFairValueHedgingInstruments1-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeLiabilities" xlink:label="us-gaap_DerivativeLiabilities" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DerivativeLiabilities-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative liabilities, gross</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeLiabilities" xlink:to="us-gaap_DerivativeLiabilities-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MarketableSecuritiesPolicy" xlink:label="us-gaap_MarketableSecuritiesPolicy" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_MarketableSecuritiesPolicy-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Marketable Securities, Policy [Policy Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MarketableSecuritiesPolicy" xlink:to="us-gaap_MarketableSecuritiesPolicy-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:label="us-gaap_TypeOfAdoptionMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_TypeOfAdoptionMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accounting Standards Update [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TypeOfAdoptionMember" xlink:to="us-gaap_TypeOfAdoptionMember-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ImpairedFinancingReceivableRelatedAllowance" xlink:label="us-gaap_ImpairedFinancingReceivableRelatedAllowance" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ImpairedFinancingReceivableRelatedAllowance-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Allowance</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ImpairedFinancingReceivableRelatedAllowance" xlink:to="us-gaap_ImpairedFinancingReceivableRelatedAllowance-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation" xlink:label="us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation</link:label>
    <link:label xlink:label="us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Taxes paid related to net share settlement of RSUs</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation" xlink:to="us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:label="us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_AdjustmentsForNewAccountingPronouncementsAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accounting Standards Update [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:to="us-gaap_AdjustmentsForNewAccountingPronouncementsAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsOfDividends" xlink:label="us-gaap_PaymentsOfDividends" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_PaymentsOfDividends-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_PaymentsOfDividends</link:label>
    <link:label xlink:label="us-gaap_PaymentsOfDividends-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Cash dividends paid</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsOfDividends" xlink:to="us-gaap_PaymentsOfDividends-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod" xlink:label="us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest Income Recognized</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod" xlink:to="us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment" xlink:label="us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loans with no related allowance, recorded investment</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment" xlink:to="us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment" xlink:label="us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loans with related allowance, recorded investment</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment" xlink:to="us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ImpairedFinancingReceivableRecordedInvestment" xlink:label="us-gaap_ImpairedFinancingReceivableRecordedInvestment" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ImpairedFinancingReceivableRecordedInvestment-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Recorded investment</link:label>
    <link:label xlink:label="us-gaap_ImpairedFinancingReceivableRecordedInvestment-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Impaired Financing Receivable, Recorded Investment, Total</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ImpairedFinancingReceivableRecordedInvestment" xlink:to="us-gaap_ImpairedFinancingReceivableRecordedInvestment-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment" xlink:label="us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Average Recorded Investment</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment" xlink:to="us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance" xlink:label="us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loans with no related allowance, unpaid principal balance</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance" xlink:to="us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance" xlink:label="us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loans with related allowance, unpaid principal balance</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance" xlink:to="us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance" xlink:label="us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Unpaid principal balance</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance" xlink:to="us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherNoninterestExpense" xlink:label="us-gaap_OtherNoninterestExpense" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_OtherNoninterestExpense-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other operating expense</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherNoninterestExpense" xlink:to="us-gaap_OtherNoninterestExpense-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NoninterestExpense" xlink:label="us-gaap_NoninterestExpense" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_NoninterestExpense-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_NoninterestExpense</link:label>
    <link:label xlink:label="us-gaap_NoninterestExpense-label" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total non-interest expense</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NoninterestExpense" xlink:to="us-gaap_NoninterestExpense-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsForRepurchaseOfCommonStock" xlink:label="us-gaap_PaymentsForRepurchaseOfCommonStock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_PaymentsForRepurchaseOfCommonStock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_PaymentsForRepurchaseOfCommonStock</link:label>
    <link:label xlink:label="us-gaap_PaymentsForRepurchaseOfCommonStock-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Purchases of treasury stock</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsForRepurchaseOfCommonStock" xlink:to="us-gaap_PaymentsForRepurchaseOfCommonStock-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ScenarioUnspecifiedDomain" xlink:label="srt_ScenarioUnspecifiedDomain" xlink:type="locator"/>
    <link:label xlink:label="srt_ScenarioUnspecifiedDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Scenario [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_ScenarioUnspecifiedDomain" xlink:to="srt_ScenarioUnspecifiedDomain-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquipmentExpense" xlink:label="us-gaap_EquipmentExpense" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_EquipmentExpense-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Computer and equipment expense</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EquipmentExpense" xlink:to="us-gaap_EquipmentExpense-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FederalDepositInsuranceCorporationPremiumExpense" xlink:label="us-gaap_FederalDepositInsuranceCorporationPremiumExpense" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_FederalDepositInsuranceCorporationPremiumExpense-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">FDIC and regulatory assessments</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FederalDepositInsuranceCorporationPremiumExpense" xlink:to="us-gaap_FederalDepositInsuranceCorporationPremiumExpense-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ClassOfFinancingReceivableTypeOfBorrowerAxis" xlink:label="us-gaap_ClassOfFinancingReceivableTypeOfBorrowerAxis" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ClassOfFinancingReceivableTypeOfBorrowerAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Type of Borrower [Axis]</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock" xlink:to="us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LoansAndLeasesReceivableTroubledDebtRestructuringPolicy" xlink:label="us-gaap_LoansAndLeasesReceivableTroubledDebtRestructuringPolicy" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_LoansAndLeasesReceivableTroubledDebtRestructuringPolicy-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Troubled Debt Restructuring [Policy Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LoansAndLeasesReceivableTroubledDebtRestructuringPolicy" xlink:to="us-gaap_LoansAndLeasesReceivableTroubledDebtRestructuringPolicy-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StateAndLocalJurisdictionMember" xlink:label="us-gaap_StateAndLocalJurisdictionMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_StateAndLocalJurisdictionMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">State and Local Jurisdiction [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StateAndLocalJurisdictionMember" xlink:to="us-gaap_StateAndLocalJurisdictionMember-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxAuthorityNameAxis" xlink:label="us-gaap_IncomeTaxAuthorityNameAxis" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_IncomeTaxAuthorityNameAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Tax Authority, Name [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxAuthorityNameAxis" xlink:to="us-gaap_IncomeTaxAuthorityNameAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxAuthorityNameDomain" xlink:label="us-gaap_IncomeTaxAuthorityNameDomain" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_IncomeTaxAuthorityNameDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Tax Authority, Name [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxAuthorityNameDomain" xlink:to="us-gaap_IncomeTaxAuthorityNameDomain-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InternalRevenueServiceIRSMember" xlink:label="us-gaap_InternalRevenueServiceIRSMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_InternalRevenueServiceIRSMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Internal Revenue Service (IRS) [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InternalRevenueServiceIRSMember" xlink:to="us-gaap_InternalRevenueServiceIRSMember-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxAuthorityAxis" xlink:label="us-gaap_IncomeTaxAuthorityAxis" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_IncomeTaxAuthorityAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Tax Authority [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxAuthorityAxis" xlink:to="us-gaap_IncomeTaxAuthorityAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxAuthorityDomain" xlink:label="us-gaap_IncomeTaxAuthorityDomain" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_IncomeTaxAuthorityDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Tax Authority [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxAuthorityDomain" xlink:to="us-gaap_IncomeTaxAuthorityDomain-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisaggregationOfRevenueTableTextBlock" xlink:label="us-gaap_DisaggregationOfRevenueTableTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DisaggregationOfRevenueTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disaggregation of Revenue [Table Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DisaggregationOfRevenueTableTextBlock" xlink:to="us-gaap_DisaggregationOfRevenueTableTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_NonaccrualLoansMember" xlink:label="caty_NonaccrualLoansMember" xlink:type="locator"/>
    <link:label xlink:label="caty_NonaccrualLoansMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Nonaccrual Loans [Member]</link:label>
    <link:label xlink:label="caty_NonaccrualLoansMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The nonaccrual loans.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_NonaccrualLoansMember" xlink:to="caty_NonaccrualLoansMember-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DomesticCountryMember" xlink:label="us-gaap_DomesticCountryMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DomesticCountryMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Domestic Tax Authority [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DomesticCountryMember" xlink:to="us-gaap_DomesticCountryMember-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LoansAndLeasesReceivableAllowanceForLoanLossesPolicy" xlink:label="us-gaap_LoansAndLeasesReceivableAllowanceForLoanLossesPolicy" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_LoansAndLeasesReceivableAllowanceForLoanLossesPolicy-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loans and Leases Receivable, Allowance for Loan Losses Policy [Policy Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LoansAndLeasesReceivableAllowanceForLoanLossesPolicy" xlink:to="us-gaap_LoansAndLeasesReceivableAllowanceForLoanLossesPolicy-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceLoanAndLeaseReceivablesHeldForSalePolicy" xlink:label="us-gaap_FinanceLoanAndLeaseReceivablesHeldForSalePolicy" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_FinanceLoanAndLeaseReceivablesHeldForSalePolicy-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financing Receivable, Held-for-sale [Policy Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLoanAndLeaseReceivablesHeldForSalePolicy" xlink:to="us-gaap_FinanceLoanAndLeaseReceivablesHeldForSalePolicy-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_AccruingTroubledDebtRestructuringMember" xlink:label="caty_AccruingTroubledDebtRestructuringMember" xlink:type="locator"/>
    <link:label xlink:label="caty_AccruingTroubledDebtRestructuringMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accruing Troubled Debt Restructuring [Member]</link:label>
    <link:label xlink:label="caty_AccruingTroubledDebtRestructuringMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The accruing troubled debt restructuring.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_AccruingTroubledDebtRestructuringMember" xlink:to="caty_AccruingTroubledDebtRestructuringMember-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceLoanAndLeaseReceivablesHeldForInvestmentPolicy" xlink:label="us-gaap_FinanceLoanAndLeaseReceivablesHeldForInvestmentPolicy" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_FinanceLoanAndLeaseReceivablesHeldForInvestmentPolicy-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financing Receivable, Held-for-investment [Policy Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLoanAndLeaseReceivablesHeldForInvestmentPolicy" xlink:to="us-gaap_FinanceLoanAndLeaseReceivablesHeldForInvestmentPolicy-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RevenueFromContractWithCustomerTextBlock" xlink:label="us-gaap_RevenueFromContractWithCustomerTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_RevenueFromContractWithCustomerTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenue from Contract with Customer [Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RevenueFromContractWithCustomerTextBlock" xlink:to="us-gaap_RevenueFromContractWithCustomerTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_NonaccruingTroubledDebtRestructuringMember" xlink:label="caty_NonaccruingTroubledDebtRestructuringMember" xlink:type="locator"/>
    <link:label xlink:label="caty_NonaccruingTroubledDebtRestructuringMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Non-accruing Troubled Debt Restructuring [Member]</link:label>
    <link:label xlink:label="caty_NonaccruingTroubledDebtRestructuringMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The non-accruing troubled debt restructuring.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_NonaccruingTroubledDebtRestructuringMember" xlink:to="caty_NonaccruingTroubledDebtRestructuringMember-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RepaymentsOfFederalHomeLoanBankBorrowings" xlink:label="us-gaap_RepaymentsOfFederalHomeLoanBankBorrowings" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_RepaymentsOfFederalHomeLoanBankBorrowings-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_RepaymentsOfFederalHomeLoanBankBorrowings</link:label>
    <link:label xlink:label="us-gaap_RepaymentsOfFederalHomeLoanBankBorrowings-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Repayment of Federal Home Loan Bank borrowings</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RepaymentsOfFederalHomeLoanBankBorrowings" xlink:to="us-gaap_RepaymentsOfFederalHomeLoanBankBorrowings-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_DocumentQuarterlyReport" xlink:label="dei_DocumentQuarterlyReport" xlink:type="locator"/>
    <link:label xlink:label="dei_DocumentQuarterlyReport-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document Quarterly Report</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentQuarterlyReport" xlink:to="dei_DocumentQuarterlyReport-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityIncorporationStateCountryCode" xlink:label="dei_EntityIncorporationStateCountryCode" xlink:type="locator"/>
    <link:label xlink:label="dei_EntityIncorporationStateCountryCode-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Incorporation, State or Country Code</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityIncorporationStateCountryCode" xlink:to="dei_EntityIncorporationStateCountryCode-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_DebtSecuritiesAvailableForSaleMember" xlink:label="caty_DebtSecuritiesAvailableForSaleMember" xlink:type="locator"/>
    <link:label xlink:label="caty_DebtSecuritiesAvailableForSaleMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Securities, Available-for-sale [Member]</link:label>
    <link:label xlink:label="caty_DebtSecuritiesAvailableForSaleMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_DebtSecuritiesAvailableForSaleMember" xlink:to="caty_DebtSecuritiesAvailableForSaleMember-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccountingPoliciesAbstract" xlink:label="us-gaap_AccountingPoliciesAbstract" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_AccountingPoliciesAbstract-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accounting Policies [Abstract]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountingPoliciesAbstract" xlink:to="us-gaap_AccountingPoliciesAbstract-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SignificantAccountingPoliciesTextBlock" xlink:label="us-gaap_SignificantAccountingPoliciesTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_SignificantAccountingPoliciesTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Significant Accounting Policies [Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SignificantAccountingPoliciesTextBlock" xlink:to="us-gaap_SignificantAccountingPoliciesTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OpenTaxYear" xlink:label="us-gaap_OpenTaxYear" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_OpenTaxYear-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_OpenTaxYear</link:label>
    <link:label xlink:label="us-gaap_OpenTaxYear-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Open Tax Year</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OpenTaxYear" xlink:to="us-gaap_OpenTaxYear-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_DocumentTransitionReport" xlink:label="dei_DocumentTransitionReport" xlink:type="locator"/>
    <link:label xlink:label="dei_DocumentTransitionReport-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document Transition Report</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentTransitionReport" xlink:to="dei_DocumentTransitionReport-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityInteractiveDataCurrent" xlink:label="dei_EntityInteractiveDataCurrent" xlink:type="locator"/>
    <link:label xlink:label="dei_EntityInteractiveDataCurrent-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Interactive Data Current</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityInteractiveDataCurrent" xlink:to="dei_EntityInteractiveDataCurrent-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_FinancingReceivableYearOneOriginatedCurrentFiscalYearAllowanceForCreditLossRecovery" xlink:label="caty_FinancingReceivableYearOneOriginatedCurrentFiscalYearAllowanceForCreditLossRecovery" xlink:type="locator"/>
    <link:label xlink:label="caty_FinancingReceivableYearOneOriginatedCurrentFiscalYearAllowanceForCreditLossRecovery-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">caty_FinancingReceivableYearOneOriginatedCurrentFiscalYearAllowanceForCreditLossRecovery</link:label>
    <link:label xlink:label="caty_FinancingReceivableYearOneOriginatedCurrentFiscalYearAllowanceForCreditLossRecovery-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">YTD period recoveries, Loans Amortized Cost Basis by Origination Year 2021</link:label>
    <link:label xlink:label="caty_FinancingReceivableYearOneOriginatedCurrentFiscalYearAllowanceForCreditLossRecovery-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount of increase in allowance for credit loss on financing receivable originated in current fiscal year from recovery.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_FinancingReceivableYearOneOriginatedCurrentFiscalYearAllowanceForCreditLossRecovery" xlink:to="caty_FinancingReceivableYearOneOriginatedCurrentFiscalYearAllowanceForCreditLossRecovery-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommonStockDividendsPerShareCashPaid" xlink:label="us-gaap_CommonStockDividendsPerShareCashPaid" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_CommonStockDividendsPerShareCashPaid-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash dividends (in dollars per share)</link:label>
    <link:label xlink:label="us-gaap_CommonStockDividendsPerShareCashPaid-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash dividends paid per common share (in dollars per share)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockDividendsPerShareCashPaid" xlink:to="us-gaap_CommonStockDividendsPerShareCashPaid-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_FinancingReceivableYearOneOriginatedCurrentFiscalYearAllowanceForCreditLossWriteOffAfterRecovery" xlink:label="caty_FinancingReceivableYearOneOriginatedCurrentFiscalYearAllowanceForCreditLossWriteOffAfterRecovery" xlink:type="locator"/>
    <link:label xlink:label="caty_FinancingReceivableYearOneOriginatedCurrentFiscalYearAllowanceForCreditLossWriteOffAfterRecovery-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net, Loans Amortized Cost Basis by Origination Year 2021</link:label>
    <link:label xlink:label="caty_FinancingReceivableYearOneOriginatedCurrentFiscalYearAllowanceForCreditLossWriteOffAfterRecovery-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount, after recovery, of writeoff of financing receivable originated current fiscal year, charged against allowance for credit loss.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_FinancingReceivableYearOneOriginatedCurrentFiscalYearAllowanceForCreditLossWriteOffAfterRecovery" xlink:to="caty_FinancingReceivableYearOneOriginatedCurrentFiscalYearAllowanceForCreditLossWriteOffAfterRecovery-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_FinancingReceivableYearTwoOriginatedAllowanceForCreditLossWriteOff" xlink:label="caty_FinancingReceivableYearTwoOriginatedAllowanceForCreditLossWriteOff" xlink:type="locator"/>
    <link:label xlink:label="caty_FinancingReceivableYearTwoOriginatedAllowanceForCreditLossWriteOff-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">YTD period charge-offs, Loans Amortized Cost Basis by Origination Year 2020</link:label>
    <link:label xlink:label="caty_FinancingReceivableYearTwoOriginatedAllowanceForCreditLossWriteOff-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount of writeoff of financing receivable originated one year prior to current fiscal year, charged against allowance for credit loss.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_FinancingReceivableYearTwoOriginatedAllowanceForCreditLossWriteOff" xlink:to="caty_FinancingReceivableYearTwoOriginatedAllowanceForCreditLossWriteOff-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_SecurityExchangeName" xlink:label="dei_SecurityExchangeName" xlink:type="locator"/>
    <link:label xlink:label="dei_SecurityExchangeName-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Security Exchange Name</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_SecurityExchangeName" xlink:to="dei_SecurityExchangeName-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_Security12bTitle" xlink:label="dei_Security12bTitle" xlink:type="locator"/>
    <link:label xlink:label="dei_Security12bTitle-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Title of 12(b) Security</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_Security12bTitle" xlink:to="dei_Security12bTitle-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_FinancingReceivableYearOneOriginatedCurrentFiscalYearAllowanceForCreditLossWriteOff" xlink:label="caty_FinancingReceivableYearOneOriginatedCurrentFiscalYearAllowanceForCreditLossWriteOff" xlink:type="locator"/>
    <link:label xlink:label="caty_FinancingReceivableYearOneOriginatedCurrentFiscalYearAllowanceForCreditLossWriteOff-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">YTD period charge-offs, Loans Amortized Cost Basis by Origination Year 2021</link:label>
    <link:label xlink:label="caty_FinancingReceivableYearOneOriginatedCurrentFiscalYearAllowanceForCreditLossWriteOff-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount of writeoff of financing receivable originated in current fiscal year, charged against allowance for credit loss.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_FinancingReceivableYearOneOriginatedCurrentFiscalYearAllowanceForCreditLossWriteOff" xlink:to="caty_FinancingReceivableYearOneOriginatedCurrentFiscalYearAllowanceForCreditLossWriteOff-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_FinancingReceivableYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearAllowanceForCreditLossRecovery" xlink:label="caty_FinancingReceivableYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearAllowanceForCreditLossRecovery" xlink:type="locator"/>
    <link:label xlink:label="caty_FinancingReceivableYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearAllowanceForCreditLossRecovery-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">caty_FinancingReceivableYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearAllowanceForCreditLossRecovery</link:label>
    <link:label xlink:label="caty_FinancingReceivableYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearAllowanceForCreditLossRecovery-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">YTD period recoveries, Loans Amortized Cost Basis by Origination Year 2019</link:label>
    <link:label xlink:label="caty_FinancingReceivableYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearAllowanceForCreditLossRecovery-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount of increase in allowance for credit loss on financing receivable originated two years prior to current fiscal year from recovery.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_FinancingReceivableYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearAllowanceForCreditLossRecovery" xlink:to="caty_FinancingReceivableYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearAllowanceForCreditLossRecovery-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_FinancingReceivableYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOffAfterRecovery" xlink:label="caty_FinancingReceivableYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOffAfterRecovery" xlink:type="locator"/>
    <link:label xlink:label="caty_FinancingReceivableYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOffAfterRecovery-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net, Loans Amortized Cost Basis by Origination Year 2019</link:label>
    <link:label xlink:label="caty_FinancingReceivableYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOffAfterRecovery-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount, after recovery, of writeoff of financing receivable originated two year prior to current fiscal year, charged against allowance for credit loss.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_FinancingReceivableYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOffAfterRecovery" xlink:to="caty_FinancingReceivableYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOffAfterRecovery-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LoansReceivableMember" xlink:label="us-gaap_LoansReceivableMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_LoansReceivableMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loans Receivable [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LoansReceivableMember" xlink:to="us-gaap_LoansReceivableMember-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_FinancingReceivableYearFourOriginatedThreeYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOff" xlink:label="caty_FinancingReceivableYearFourOriginatedThreeYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOff" xlink:type="locator"/>
    <link:label xlink:label="caty_FinancingReceivableYearFourOriginatedThreeYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOff-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">YTD period charge-offs, Loans Amortized Cost Basis by Origination Year 2018</link:label>
    <link:label xlink:label="caty_FinancingReceivableYearFourOriginatedThreeYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOff-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount of writeoff of financing receivable originated three years prior to current fiscal year, charged against allowance for credit loss.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_FinancingReceivableYearFourOriginatedThreeYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOff" xlink:to="caty_FinancingReceivableYearFourOriginatedThreeYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOff-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_FinancingReceivableYearTwoOriginatedAllowanceForCreditLossRecovery" xlink:label="caty_FinancingReceivableYearTwoOriginatedAllowanceForCreditLossRecovery" xlink:type="locator"/>
    <link:label xlink:label="caty_FinancingReceivableYearTwoOriginatedAllowanceForCreditLossRecovery-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">caty_FinancingReceivableYearTwoOriginatedAllowanceForCreditLossRecovery</link:label>
    <link:label xlink:label="caty_FinancingReceivableYearTwoOriginatedAllowanceForCreditLossRecovery-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">YTD period recoveries, Loans Amortized Cost Basis by Origination Year 2020</link:label>
    <link:label xlink:label="caty_FinancingReceivableYearTwoOriginatedAllowanceForCreditLossRecovery-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount of increase in allowance for credit loss on financing receivable originated one year prior to current fiscal year from recovery.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_FinancingReceivableYearTwoOriginatedAllowanceForCreditLossRecovery" xlink:to="caty_FinancingReceivableYearTwoOriginatedAllowanceForCreditLossRecovery-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProceedsFromFederalHomeLoanBankBorrowings" xlink:label="us-gaap_ProceedsFromFederalHomeLoanBankBorrowings" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ProceedsFromFederalHomeLoanBankBorrowings-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Advances from Federal Home Loan Bank</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromFederalHomeLoanBankBorrowings" xlink:to="us-gaap_ProceedsFromFederalHomeLoanBankBorrowings-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_EquityLinesPortfolioSegmentMember" xlink:label="caty_EquityLinesPortfolioSegmentMember" xlink:type="locator"/>
    <link:label xlink:label="caty_EquityLinesPortfolioSegmentMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Equity Lines Portfolio Segment [Member]</link:label>
    <link:label xlink:label="caty_EquityLinesPortfolioSegmentMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Loan based on the equity of the borrower's residential property in which the borrower receives the loan amount upfront.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_EquityLinesPortfolioSegmentMember" xlink:to="caty_EquityLinesPortfolioSegmentMember-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_FinancingReceivableYearTwoOriginatedAllowanceForCreditLossWriteOffAfterRecovery" xlink:label="caty_FinancingReceivableYearTwoOriginatedAllowanceForCreditLossWriteOffAfterRecovery" xlink:type="locator"/>
    <link:label xlink:label="caty_FinancingReceivableYearTwoOriginatedAllowanceForCreditLossWriteOffAfterRecovery-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net, Loans Amortized Cost Basis by Origination Year 2020</link:label>
    <link:label xlink:label="caty_FinancingReceivableYearTwoOriginatedAllowanceForCreditLossWriteOffAfterRecovery-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount, after recovery, of writeoff of financing receivable originated one year prior to current fiscal year, charged against allowance for credit loss.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_FinancingReceivableYearTwoOriginatedAllowanceForCreditLossWriteOffAfterRecovery" xlink:to="caty_FinancingReceivableYearTwoOriginatedAllowanceForCreditLossWriteOffAfterRecovery-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_FinancingReceivableYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOff" xlink:label="caty_FinancingReceivableYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOff" xlink:type="locator"/>
    <link:label xlink:label="caty_FinancingReceivableYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOff-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">YTD period charge-offs, Loans Amortized Cost Basis by Origination Year 2019</link:label>
    <link:label xlink:label="caty_FinancingReceivableYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOff-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount of writeoff of financing receivable originated two years prior to current fiscal year, charged against allowance for credit loss.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_FinancingReceivableYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOff" xlink:to="caty_FinancingReceivableYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOff-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_FinancingReceivableYearFiveOriginatedFourYearsBeforeCurrentFiscalYearAllowanceForCreditLossRecovery" xlink:label="caty_FinancingReceivableYearFiveOriginatedFourYearsBeforeCurrentFiscalYearAllowanceForCreditLossRecovery" xlink:type="locator"/>
    <link:label xlink:label="caty_FinancingReceivableYearFiveOriginatedFourYearsBeforeCurrentFiscalYearAllowanceForCreditLossRecovery-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">caty_FinancingReceivableYearFiveOriginatedFourYearsBeforeCurrentFiscalYearAllowanceForCreditLossRecovery</link:label>
    <link:label xlink:label="caty_FinancingReceivableYearFiveOriginatedFourYearsBeforeCurrentFiscalYearAllowanceForCreditLossRecovery-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">YTD period recoveries, Loans Amortized Cost Basis by Origination Year 2017</link:label>
    <link:label xlink:label="caty_FinancingReceivableYearFiveOriginatedFourYearsBeforeCurrentFiscalYearAllowanceForCreditLossRecovery-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount of increase in allowance for credit loss on financing receivable originated four years prior to current fiscal year from recovery.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_FinancingReceivableYearFiveOriginatedFourYearsBeforeCurrentFiscalYearAllowanceForCreditLossRecovery" xlink:to="caty_FinancingReceivableYearFiveOriginatedFourYearsBeforeCurrentFiscalYearAllowanceForCreditLossRecovery-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_RealEstateConstructionPortfolioSegmentMember" xlink:label="caty_RealEstateConstructionPortfolioSegmentMember" xlink:type="locator"/>
    <link:label xlink:label="caty_RealEstateConstructionPortfolioSegmentMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Real Estate Construction Portfolio Segment [Member]</link:label>
    <link:label xlink:label="caty_RealEstateConstructionPortfolioSegmentMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">A borrowing arrangement which provides the entity constructing a facility (such as a building and a landfill) with funds to effect construction, generally on a draw down, or as needed, basis.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_RealEstateConstructionPortfolioSegmentMember" xlink:to="caty_RealEstateConstructionPortfolioSegmentMember-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_FinancingReceivableYearFiveOriginatedFourYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOffAfterRecovery" xlink:label="caty_FinancingReceivableYearFiveOriginatedFourYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOffAfterRecovery" xlink:type="locator"/>
    <link:label xlink:label="caty_FinancingReceivableYearFiveOriginatedFourYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOffAfterRecovery-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net, Loans Amortized Cost Basis by Origination Year 2017</link:label>
    <link:label xlink:label="caty_FinancingReceivableYearFiveOriginatedFourYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOffAfterRecovery-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount, after recovery, of writeoff of financing receivable originated four years prior to current fiscal year, charged against allowance for credit loss.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_FinancingReceivableYearFiveOriginatedFourYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOffAfterRecovery" xlink:to="caty_FinancingReceivableYearFiveOriginatedFourYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOffAfterRecovery-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_FinancingReceivableOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOff" xlink:label="caty_FinancingReceivableOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOff" xlink:type="locator"/>
    <link:label xlink:label="caty_FinancingReceivableOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOff-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">YTD period charge-offs, Loans Amortized Cost Basis by Origination Year Prior</link:label>
    <link:label xlink:label="caty_FinancingReceivableOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOff-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount of writeoff of financing receivable originated more than five years prior to current fiscal year, charged against allowance for credit loss.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_FinancingReceivableOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOff" xlink:to="caty_FinancingReceivableOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOff-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_FinancingReceivableYearFourOriginatedThreeYearsBeforeCurrentFiscalYearAllowanceForCreditLossRecovery" xlink:label="caty_FinancingReceivableYearFourOriginatedThreeYearsBeforeCurrentFiscalYearAllowanceForCreditLossRecovery" xlink:type="locator"/>
    <link:label xlink:label="caty_FinancingReceivableYearFourOriginatedThreeYearsBeforeCurrentFiscalYearAllowanceForCreditLossRecovery-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">caty_FinancingReceivableYearFourOriginatedThreeYearsBeforeCurrentFiscalYearAllowanceForCreditLossRecovery</link:label>
    <link:label xlink:label="caty_FinancingReceivableYearFourOriginatedThreeYearsBeforeCurrentFiscalYearAllowanceForCreditLossRecovery-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">YTD period recoveries, Loans Amortized Cost Basis by Origination Year 2018</link:label>
    <link:label xlink:label="caty_FinancingReceivableYearFourOriginatedThreeYearsBeforeCurrentFiscalYearAllowanceForCreditLossRecovery-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount of increase in allowance for credit loss on financing receivable originated three years prior to current fiscal year from recovery.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_FinancingReceivableYearFourOriginatedThreeYearsBeforeCurrentFiscalYearAllowanceForCreditLossRecovery" xlink:to="caty_FinancingReceivableYearFourOriginatedThreeYearsBeforeCurrentFiscalYearAllowanceForCreditLossRecovery-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_FinancingReceivableYearFourOriginatedThreeYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOffAfterRecovery" xlink:label="caty_FinancingReceivableYearFourOriginatedThreeYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOffAfterRecovery" xlink:type="locator"/>
    <link:label xlink:label="caty_FinancingReceivableYearFourOriginatedThreeYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOffAfterRecovery-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net, Loans Amortized Cost Basis by Origination Year 2018</link:label>
    <link:label xlink:label="caty_FinancingReceivableYearFourOriginatedThreeYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOffAfterRecovery-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount, after recovery, of writeoff of financing receivable originated three years prior to current fiscal year, charged against allowance for credit loss.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_FinancingReceivableYearFourOriginatedThreeYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOffAfterRecovery" xlink:to="caty_FinancingReceivableYearFourOriginatedThreeYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOffAfterRecovery-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DepositsFairValueDisclosure" xlink:label="us-gaap_DepositsFairValueDisclosure" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DepositsFairValueDisclosure-label" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Deposits</link:label>
    <link:label xlink:label="us-gaap_DepositsFairValueDisclosure-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_DepositsFairValueDisclosure</link:label>
    <link:label xlink:label="us-gaap_DepositsFairValueDisclosure-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deposits</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DepositsFairValueDisclosure" xlink:to="us-gaap_DepositsFairValueDisclosure-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_FinancingReceivableYearFiveOriginatedFourYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOff" xlink:label="caty_FinancingReceivableYearFiveOriginatedFourYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOff" xlink:type="locator"/>
    <link:label xlink:label="caty_FinancingReceivableYearFiveOriginatedFourYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOff-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">YTD period charge-offs, Loans Amortized Cost Basis by Origination Year 2017</link:label>
    <link:label xlink:label="caty_FinancingReceivableYearFiveOriginatedFourYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOff-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount of writeoff of financing receivable originated four years prior to current fiscal year, charged against allowance for credit loss.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_FinancingReceivableYearFiveOriginatedFourYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOff" xlink:to="caty_FinancingReceivableYearFiveOriginatedFourYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOff-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_FinancingReceivableRevolvingAllowanceForCreditLossRecovery" xlink:label="caty_FinancingReceivableRevolvingAllowanceForCreditLossRecovery" xlink:type="locator"/>
    <link:label xlink:label="caty_FinancingReceivableRevolvingAllowanceForCreditLossRecovery-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">caty_FinancingReceivableRevolvingAllowanceForCreditLossRecovery</link:label>
    <link:label xlink:label="caty_FinancingReceivableRevolvingAllowanceForCreditLossRecovery-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">YTD period recoveries, Revolving Loans</link:label>
    <link:label xlink:label="caty_FinancingReceivableRevolvingAllowanceForCreditLossRecovery-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount of increase in allowance for credit loss on financing receivable that can be withdrawn, repaid and redrawn from recovery.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_FinancingReceivableRevolvingAllowanceForCreditLossRecovery" xlink:to="caty_FinancingReceivableRevolvingAllowanceForCreditLossRecovery-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_FinancingReceivableRevolvingAllowanceForCreditLossWriteOffAfterRecovery" xlink:label="caty_FinancingReceivableRevolvingAllowanceForCreditLossWriteOffAfterRecovery" xlink:type="locator"/>
    <link:label xlink:label="caty_FinancingReceivableRevolvingAllowanceForCreditLossWriteOffAfterRecovery-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net, Revolving Loans</link:label>
    <link:label xlink:label="caty_FinancingReceivableRevolvingAllowanceForCreditLossWriteOffAfterRecovery-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount, after recovery, of writeoff of financing receivable that can be withdrawn, repaid and redrawn, charged against allowance for credit loss.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_FinancingReceivableRevolvingAllowanceForCreditLossWriteOffAfterRecovery" xlink:to="caty_FinancingReceivableRevolvingAllowanceForCreditLossWriteOffAfterRecovery-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock" xlink:label="us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock" xlink:to="us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_FinancingReceivableOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearAllowanceForCreditLossRecovery" xlink:label="caty_FinancingReceivableOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearAllowanceForCreditLossRecovery" xlink:type="locator"/>
    <link:label xlink:label="caty_FinancingReceivableOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearAllowanceForCreditLossRecovery-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">caty_FinancingReceivableOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearAllowanceForCreditLossRecovery</link:label>
    <link:label xlink:label="caty_FinancingReceivableOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearAllowanceForCreditLossRecovery-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">YTD period recoveries, Loans Amortized Cost Basis by Origination Year Prior</link:label>
    <link:label xlink:label="caty_FinancingReceivableOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearAllowanceForCreditLossRecovery-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount of increase in allowance for credit loss on financing receivable originated more than five years prior to current fiscal year from recovery.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_FinancingReceivableOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearAllowanceForCreditLossRecovery" xlink:to="caty_FinancingReceivableOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearAllowanceForCreditLossRecovery-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CollateralAlreadyPostedAggregateFairValue" xlink:label="us-gaap_CollateralAlreadyPostedAggregateFairValue" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_CollateralAlreadyPostedAggregateFairValue-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_CollateralAlreadyPostedAggregateFairValue</link:label>
    <link:label xlink:label="us-gaap_CollateralAlreadyPostedAggregateFairValue-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Collateral Already Posted, Aggregate Fair Value</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CollateralAlreadyPostedAggregateFairValue" xlink:to="us-gaap_CollateralAlreadyPostedAggregateFairValue-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_FinancingReceivableOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOffAfterRecovery" xlink:label="caty_FinancingReceivableOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOffAfterRecovery" xlink:type="locator"/>
    <link:label xlink:label="caty_FinancingReceivableOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOffAfterRecovery-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net, Loans Amortized Cost Basis by Origination Year Prior</link:label>
    <link:label xlink:label="caty_FinancingReceivableOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOffAfterRecovery-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount, after recovery, of writeoff of financing receivable originated more than five years prior to current fiscal year, charged against allowance for credit loss.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_FinancingReceivableOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOffAfterRecovery" xlink:to="caty_FinancingReceivableOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOffAfterRecovery-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_FinancingReceivableRevolvingAllowanceForCreditLossWriteOff" xlink:label="caty_FinancingReceivableRevolvingAllowanceForCreditLossWriteOff" xlink:type="locator"/>
    <link:label xlink:label="caty_FinancingReceivableRevolvingAllowanceForCreditLossWriteOff-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">YTD period charge-offs, Revolving Loans</link:label>
    <link:label xlink:label="caty_FinancingReceivableRevolvingAllowanceForCreditLossWriteOff-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount of writeoff of financing receivable that can be withdrawn, repaid and redrawn, charged against allowance for credit loss.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_FinancingReceivableRevolvingAllowanceForCreditLossWriteOff" xlink:to="caty_FinancingReceivableRevolvingAllowanceForCreditLossWriteOff-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_FinancingReceivableRevolvingConvertedToTermLoanWriteOff" xlink:label="caty_FinancingReceivableRevolvingConvertedToTermLoanWriteOff" xlink:type="locator"/>
    <link:label xlink:label="caty_FinancingReceivableRevolvingConvertedToTermLoanWriteOff-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">YTD period charge-offs, Revolving Converted to Term Loans</link:label>
    <link:label xlink:label="caty_FinancingReceivableRevolvingConvertedToTermLoanWriteOff-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount of writeoff of financing receivable converted to term loan, charged against allowance for credit loss.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_FinancingReceivableRevolvingConvertedToTermLoanWriteOff" xlink:to="caty_FinancingReceivableRevolvingConvertedToTermLoanWriteOff-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_FinancingReceivableRevolvingConvertedToTermLoanRecovery" xlink:label="caty_FinancingReceivableRevolvingConvertedToTermLoanRecovery" xlink:type="locator"/>
    <link:label xlink:label="caty_FinancingReceivableRevolvingConvertedToTermLoanRecovery-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">caty_FinancingReceivableRevolvingConvertedToTermLoanRecovery</link:label>
    <link:label xlink:label="caty_FinancingReceivableRevolvingConvertedToTermLoanRecovery-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">YTD period recoveries, Revolving Converted to Term Loans</link:label>
    <link:label xlink:label="caty_FinancingReceivableRevolvingConvertedToTermLoanRecovery-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount of increase in allowance for credit loss on financing receivable converted to term loan from recovery.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_FinancingReceivableRevolvingConvertedToTermLoanRecovery" xlink:to="caty_FinancingReceivableRevolvingConvertedToTermLoanRecovery-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_FinancingReceivableRevolvingConvertedToTermLoanWriteoffAfterRecovery" xlink:label="caty_FinancingReceivableRevolvingConvertedToTermLoanWriteoffAfterRecovery" xlink:type="locator"/>
    <link:label xlink:label="caty_FinancingReceivableRevolvingConvertedToTermLoanWriteoffAfterRecovery-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net, Revolving Converted to Term Loans</link:label>
    <link:label xlink:label="caty_FinancingReceivableRevolvingConvertedToTermLoanWriteoffAfterRecovery-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount, after recovery, of writeoff of financing receivable converted to term loan, charged against allowance for credit loss.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_FinancingReceivableRevolvingConvertedToTermLoanWriteoffAfterRecovery" xlink:to="caty_FinancingReceivableRevolvingConvertedToTermLoanWriteoffAfterRecovery-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_AmortizationOfRightOfUseAssetOperatingLease" xlink:label="caty_AmortizationOfRightOfUseAssetOperatingLease" xlink:type="locator"/>
    <link:label xlink:label="caty_AmortizationOfRightOfUseAssetOperatingLease-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Amortization of right-of-use asset</link:label>
    <link:label xlink:label="caty_AmortizationOfRightOfUseAssetOperatingLease-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the amount of amortization of right-of-use asset during the period under operating lease.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_AmortizationOfRightOfUseAssetOperatingLease" xlink:to="caty_AmortizationOfRightOfUseAssetOperatingLease-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RepaymentsOfShortTermDebt" xlink:label="us-gaap_RepaymentsOfShortTermDebt" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_RepaymentsOfShortTermDebt-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_RepaymentsOfShortTermDebt</link:label>
    <link:label xlink:label="us-gaap_RepaymentsOfShortTermDebt-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Repayment of short-term borrowings</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RepaymentsOfShortTermDebt" xlink:to="us-gaap_RepaymentsOfShortTermDebt-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsToAcquireAvailableForSaleSecurities" xlink:label="us-gaap_PaymentsToAcquireAvailableForSaleSecurities" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_PaymentsToAcquireAvailableForSaleSecurities-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_PaymentsToAcquireAvailableForSaleSecurities</link:label>
    <link:label xlink:label="us-gaap_PaymentsToAcquireAvailableForSaleSecurities-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Purchase of investment securities available-for-sale</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsToAcquireAvailableForSaleSecurities" xlink:to="us-gaap_PaymentsToAcquireAvailableForSaleSecurities-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeAssetFairValueOfCollateral" xlink:label="us-gaap_DerivativeAssetFairValueOfCollateral" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DerivativeAssetFairValueOfCollateral-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_DerivativeAssetFairValueOfCollateral</link:label>
    <link:label xlink:label="us-gaap_DerivativeAssetFairValueOfCollateral-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Derivatives, collateral posted</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeAssetFairValueOfCollateral" xlink:to="us-gaap_DerivativeAssetFairValueOfCollateral-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_ChangeInOperatingLeaseLiabilities" xlink:label="caty_ChangeInOperatingLeaseLiabilities" xlink:type="locator"/>
    <link:label xlink:label="caty_ChangeInOperatingLeaseLiabilities-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Change in operating lease liabilities</link:label>
    <link:label xlink:label="caty_ChangeInOperatingLeaseLiabilities-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the cash flow statement impact of the change in operating lease liabilities during the period.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_ChangeInOperatingLeaseLiabilities" xlink:to="caty_ChangeInOperatingLeaseLiabilities-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities" xlink:label="us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from sale of investment securities available-for-sale</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities" xlink:to="us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_AllowanceForCreditLossesOnAvailableForSaleDebtSecuritiesPolicyTextBlock" xlink:label="caty_AllowanceForCreditLossesOnAvailableForSaleDebtSecuritiesPolicyTextBlock" xlink:type="locator"/>
    <link:label xlink:label="caty_AllowanceForCreditLossesOnAvailableForSaleDebtSecuritiesPolicyTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Allowance for Credit Losses on Available for Sale Debt Securities [Policy Text Block]</link:label>
    <link:label xlink:label="caty_AllowanceForCreditLossesOnAvailableForSaleDebtSecuritiesPolicyTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure of accounting policy for allowance for credit losses on available for sale debt securities.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_AllowanceForCreditLossesOnAvailableForSaleDebtSecuritiesPolicyTextBlock" xlink:to="caty_AllowanceForCreditLossesOnAvailableForSaleDebtSecuritiesPolicyTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_LoanHeldForInvestmentByLoanPortfolioSegmentsInternalRiskRatingsAndVintageYearTableTextBlock" xlink:label="caty_LoanHeldForInvestmentByLoanPortfolioSegmentsInternalRiskRatingsAndVintageYearTableTextBlock" xlink:type="locator"/>
    <link:label xlink:label="caty_LoanHeldForInvestmentByLoanPortfolioSegmentsInternalRiskRatingsAndVintageYearTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loan Held for Investment by Loan Portfolio Segments, Internal Risk Ratings and Vintage Year [Table Text Block]</link:label>
    <link:label xlink:label="caty_LoanHeldForInvestmentByLoanPortfolioSegmentsInternalRiskRatingsAndVintageYearTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Tabular disclosure of loan held for investment by loan portfolio segments, internal risk ratings and vintage year.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_LoanHeldForInvestmentByLoanPortfolioSegmentsInternalRiskRatingsAndVintageYearTableTextBlock" xlink:to="caty_LoanHeldForInvestmentByLoanPortfolioSegmentsInternalRiskRatingsAndVintageYearTableTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding-label" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Diluted (in shares)</link:label>
    <link:label xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Diluted weighted-average number of common shares outstanding (in shares)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:to="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_InvestmentsInVentureCapitalAndPrivateCompanyStockMember" xlink:label="caty_InvestmentsInVentureCapitalAndPrivateCompanyStockMember" xlink:type="locator"/>
    <link:label xlink:label="caty_InvestmentsInVentureCapitalAndPrivateCompanyStockMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Investments in Venture Capital and Private Company Stock [Member]</link:label>
    <link:label xlink:label="caty_InvestmentsInVentureCapitalAndPrivateCompanyStockMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents investments in venture capital and private company stock.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_InvestmentsInVentureCapitalAndPrivateCompanyStockMember" xlink:to="caty_InvestmentsInVentureCapitalAndPrivateCompanyStockMember-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_ShortTermInvestmentsAndInterestBearingDeposits" xlink:label="caty_ShortTermInvestmentsAndInterestBearingDeposits" xlink:type="locator"/>
    <link:label xlink:label="caty_ShortTermInvestmentsAndInterestBearingDeposits-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Short-term investments and interest-bearing deposits</link:label>
    <link:label xlink:label="caty_ShortTermInvestmentsAndInterestBearingDeposits-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Short-term investments and interest bearing deposits</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_ShortTermInvestmentsAndInterestBearingDeposits" xlink:to="caty_ShortTermInvestmentsAndInterestBearingDeposits-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_OtherBorrowingsForAffordableHousingInvestments" xlink:label="caty_OtherBorrowingsForAffordableHousingInvestments" xlink:type="locator"/>
    <link:label xlink:label="caty_OtherBorrowingsForAffordableHousingInvestments-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other borrowings of affordable housing investments</link:label>
    <link:label xlink:label="caty_OtherBorrowingsForAffordableHousingInvestments-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other borrowings for affordable housing investments</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_OtherBorrowingsForAffordableHousingInvestments" xlink:to="caty_OtherBorrowingsForAffordableHousingInvestments-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_DividendIncomeFromFederalHomeLoanBankStock" xlink:label="caty_DividendIncomeFromFederalHomeLoanBankStock" xlink:type="locator"/>
    <link:label xlink:label="caty_DividendIncomeFromFederalHomeLoanBankStock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">caty_DividendIncomeFromFederalHomeLoanBankStock</link:label>
    <link:label xlink:label="caty_DividendIncomeFromFederalHomeLoanBankStock-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Federal Home Loan Bank stock</link:label>
    <link:label xlink:label="caty_DividendIncomeFromFederalHomeLoanBankStock-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Dividend income from Federal Home Loan Bank stock</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_DividendIncomeFromFederalHomeLoanBankStock" xlink:to="caty_DividendIncomeFromFederalHomeLoanBankStock-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_LetterOfCreditCommissions" xlink:label="caty_LetterOfCreditCommissions" xlink:type="locator"/>
    <link:label xlink:label="caty_LetterOfCreditCommissions-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Letters of credit commissions</link:label>
    <link:label xlink:label="caty_LetterOfCreditCommissions-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Commissions revenue earned from letter of credit international services</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_LetterOfCreditCommissions" xlink:to="caty_LetterOfCreditCommissions-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_NorthernCaliforniaMember" xlink:label="caty_NorthernCaliforniaMember" xlink:type="locator"/>
    <link:label xlink:label="caty_NorthernCaliforniaMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Northern California 1 [Member]</link:label>
    <link:label xlink:label="caty_NorthernCaliforniaMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the geographical location of Northern California.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_NorthernCaliforniaMember" xlink:to="caty_NorthernCaliforniaMember-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByAssetClassAxis" xlink:label="us-gaap_FairValueByAssetClassAxis" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_FairValueByAssetClassAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Asset Class [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueByAssetClassAxis" xlink:to="us-gaap_FairValueByAssetClassAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_SouthernCaliforniaMember" xlink:label="caty_SouthernCaliforniaMember" xlink:type="locator"/>
    <link:label xlink:label="caty_SouthernCaliforniaMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Southern California1 [Member]</link:label>
    <link:label xlink:label="caty_SouthernCaliforniaMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The geographical region of Southern California.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_SouthernCaliforniaMember" xlink:to="caty_SouthernCaliforniaMember-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain" xlink:label="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Asset Class [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain" xlink:to="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementTable" xlink:label="us-gaap_StatementTable" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_StatementTable-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement [Table]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementTable" xlink:to="us-gaap_StatementTable-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementOfFinancialPositionAbstract" xlink:label="us-gaap_StatementOfFinancialPositionAbstract" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_StatementOfFinancialPositionAbstract-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement of Financial Position [Abstract]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementOfFinancialPositionAbstract" xlink:to="us-gaap_StatementOfFinancialPositionAbstract-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EarningsPerShareDiluted" xlink:label="us-gaap_EarningsPerShareDiluted" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_EarningsPerShareDiluted-label" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Diluted (in dollars per share)</link:label>
    <link:label xlink:label="us-gaap_EarningsPerShareDiluted-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_EarningsPerShareDiluted</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EarningsPerShareDiluted" xlink:to="us-gaap_EarningsPerShareDiluted-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_FinancingReceivableAllowanceForCreditLossWriteoffAfterRecoveryNet" xlink:label="caty_FinancingReceivableAllowanceForCreditLossWriteoffAfterRecoveryNet" xlink:type="locator"/>
    <link:label xlink:label="caty_FinancingReceivableAllowanceForCreditLossWriteoffAfterRecoveryNet-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">caty_FinancingReceivableAllowanceForCreditLossWriteoffAfterRecoveryNet</link:label>
    <link:label xlink:label="caty_FinancingReceivableAllowanceForCreditLossWriteoffAfterRecoveryNet-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net</link:label>
    <link:label xlink:label="caty_FinancingReceivableAllowanceForCreditLossWriteoffAfterRecoveryNet-label" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:type="resource" xml:lang="en-US">Net (charge-offs)/recoveries</link:label>
    <link:label xlink:label="caty_FinancingReceivableAllowanceForCreditLossWriteoffAfterRecoveryNet-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount, after recovery, of writeoff of financing receivable, charged against allowance for credit loss.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_FinancingReceivableAllowanceForCreditLossWriteoffAfterRecoveryNet" xlink:to="caty_FinancingReceivableAllowanceForCreditLossWriteoffAfterRecoveryNet-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic-label" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Basic (in shares)</link:label>
    <link:label xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_WeightedAverageNumberOfSharesOutstandingBasic</link:label>
    <link:label xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Basic weighted-average number of common shares outstanding (in shares)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:to="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_PerformanceBasedRestrictedStockUnitsNumberOfSharesThatMayVestPercentageOfTarget" xlink:label="caty_PerformanceBasedRestrictedStockUnitsNumberOfSharesThatMayVestPercentageOfTarget" xlink:type="locator"/>
    <link:label xlink:label="caty_PerformanceBasedRestrictedStockUnitsNumberOfSharesThatMayVestPercentageOfTarget-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">caty_PerformanceBasedRestrictedStockUnitsNumberOfSharesThatMayVestPercentageOfTarget</link:label>
    <link:label xlink:label="caty_PerformanceBasedRestrictedStockUnitsNumberOfSharesThatMayVestPercentageOfTarget-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Performance-based Restricted Stock Units, Number of Shares That May Vest, Percentage of Target</link:label>
    <link:label xlink:label="caty_PerformanceBasedRestrictedStockUnitsNumberOfSharesThatMayVestPercentageOfTarget-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the number of performance-based restricted stock units that may vest, expressed as a percentage of the target.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_PerformanceBasedRestrictedStockUnitsNumberOfSharesThatMayVestPercentageOfTarget" xlink:to="caty_PerformanceBasedRestrictedStockUnitsNumberOfSharesThatMayVestPercentageOfTarget-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EffectiveIncomeTaxRateContinuingOperations" xlink:label="us-gaap_EffectiveIncomeTaxRateContinuingOperations" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_EffectiveIncomeTaxRateContinuingOperations-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_EffectiveIncomeTaxRateContinuingOperations</link:label>
    <link:label xlink:label="us-gaap_EffectiveIncomeTaxRateContinuingOperations-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Effective Income Tax Rate Reconciliation, Percent, Total</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EffectiveIncomeTaxRateContinuingOperations" xlink:to="us-gaap_EffectiveIncomeTaxRateContinuingOperations-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_NetChangeInUnrealizedHoldingLossGainOnSecuritiesAvailableForSaleNetOfTax" xlink:label="caty_NetChangeInUnrealizedHoldingLossGainOnSecuritiesAvailableForSaleNetOfTax" xlink:type="locator"/>
    <link:label xlink:label="caty_NetChangeInUnrealizedHoldingLossGainOnSecuritiesAvailableForSaleNetOfTax-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net change in unrealized holding loss on securities available-for-sale, net of tax</link:label>
    <link:label xlink:label="caty_NetChangeInUnrealizedHoldingLossGainOnSecuritiesAvailableForSaleNetOfTax-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Net change in unrealized holding (loss)/gain on securities available-for-sale, net of tax</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_NetChangeInUnrealizedHoldingLossGainOnSecuritiesAvailableForSaleNetOfTax" xlink:to="caty_NetChangeInUnrealizedHoldingLossGainOnSecuritiesAvailableForSaleNetOfTax-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivableRevolvingConvertedToTermLoan" xlink:label="us-gaap_FinancingReceivableRevolvingConvertedToTermLoan" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_FinancingReceivableRevolvingConvertedToTermLoan-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Pass, Revolving Converted to Term Loans</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinancingReceivableRevolvingConvertedToTermLoan" xlink:to="us-gaap_FinancingReceivableRevolvingConvertedToTermLoan-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EarningsPerShareBasic" xlink:label="us-gaap_EarningsPerShareBasic" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_EarningsPerShareBasic-label" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Basic (in dollars per share)</link:label>
    <link:label xlink:label="us-gaap_EarningsPerShareBasic-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_EarningsPerShareBasic</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EarningsPerShareBasic" xlink:to="us-gaap_EarningsPerShareBasic-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AvailableForSaleSecurities" xlink:label="us-gaap_AvailableForSaleSecurities" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_AvailableForSaleSecurities-label" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Securities available-for-sale</link:label>
    <link:label xlink:label="us-gaap_AvailableForSaleSecurities-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_AvailableForSaleSecurities</link:label>
    <link:label xlink:label="us-gaap_AvailableForSaleSecurities-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Securities available-for-sale</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AvailableForSaleSecurities" xlink:to="us-gaap_AvailableForSaleSecurities-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_NumberOfLimitedPartnershipsInHousingInvestments" xlink:label="caty_NumberOfLimitedPartnershipsInHousingInvestments" xlink:type="locator"/>
    <link:label xlink:label="caty_NumberOfLimitedPartnershipsInHousingInvestments-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">caty_NumberOfLimitedPartnershipsInHousingInvestments</link:label>
    <link:label xlink:label="caty_NumberOfLimitedPartnershipsInHousingInvestments-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number Of Limited Partnerships In Housing Investments</link:label>
    <link:label xlink:label="caty_NumberOfLimitedPartnershipsInHousingInvestments-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Number of limited Partnerships in housing investments.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_NumberOfLimitedPartnershipsInHousingInvestments" xlink:to="caty_NumberOfLimitedPartnershipsInHousingInvestments-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_NumberOfBranchLocations" xlink:label="caty_NumberOfBranchLocations" xlink:type="locator"/>
    <link:label xlink:label="caty_NumberOfBranchLocations-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">caty_NumberOfBranchLocations</link:label>
    <link:label xlink:label="caty_NumberOfBranchLocations-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number Of Branch Locations</link:label>
    <link:label xlink:label="caty_NumberOfBranchLocations-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Number of branch locations</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_NumberOfBranchLocations" xlink:to="caty_NumberOfBranchLocations-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementOfCashFlowsAbstract" xlink:label="us-gaap_StatementOfCashFlowsAbstract" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_StatementOfCashFlowsAbstract-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement of Cash Flows [Abstract]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementOfCashFlowsAbstract" xlink:to="us-gaap_StatementOfCashFlowsAbstract-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_ResidentialMortgageAndEquityLinesPortfolioSegmentMember" xlink:label="caty_ResidentialMortgageAndEquityLinesPortfolioSegmentMember" xlink:type="locator"/>
    <link:label xlink:label="caty_ResidentialMortgageAndEquityLinesPortfolioSegmentMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Residential Mortgage and Equity Lines Portfolio Segment [Member]</link:label>
    <link:label xlink:label="caty_ResidentialMortgageAndEquityLinesPortfolioSegmentMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Residential mortgage segment is any loan primarily for personal, family, or household use that is secured by a mortgage, deed of trust, or other equivalent consensual security interest while Equity line portfolio segment loan based on the equity of the borrower's residential property in which the borrower receives the loan amount upfront.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_ResidentialMortgageAndEquityLinesPortfolioSegmentMember" xlink:to="caty_ResidentialMortgageAndEquityLinesPortfolioSegmentMember-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementOfStockholdersEquityAbstract" xlink:label="us-gaap_StatementOfStockholdersEquityAbstract" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_StatementOfStockholdersEquityAbstract-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement of Stockholders' Equity [Abstract]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementOfStockholdersEquityAbstract" xlink:to="us-gaap_StatementOfStockholdersEquityAbstract-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent" xlink:label="us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Total other comprehensive (loss)/income, pre-tax</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent" xlink:to="us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossTaxPortionAttributableToParent1" xlink:label="us-gaap_OtherComprehensiveIncomeLossTaxPortionAttributableToParent1" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_OtherComprehensiveIncomeLossTaxPortionAttributableToParent1-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Total other comprehensive (loss)/income, tax</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherComprehensiveIncomeLossTaxPortionAttributableToParent1" xlink:to="us-gaap_OtherComprehensiveIncomeLossTaxPortionAttributableToParent1-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementAbstract" xlink:label="us-gaap_IncomeStatementAbstract" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_IncomeStatementAbstract-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Statement [Abstract]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeStatementAbstract" xlink:to="us-gaap_IncomeStatementAbstract-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other comprehensive income (loss)</link:label>
    <link:label xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total other comprehensive (loss)/income, net of tax</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent" xlink:to="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeAverageBasisSpreadOnVariableRate" xlink:label="us-gaap_DerivativeAverageBasisSpreadOnVariableRate" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DerivativeAverageBasisSpreadOnVariableRate-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_DerivativeAverageBasisSpreadOnVariableRate</link:label>
    <link:label xlink:label="us-gaap_DerivativeAverageBasisSpreadOnVariableRate-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Weighted average variable rate spread</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeAverageBasisSpreadOnVariableRate" xlink:to="us-gaap_DerivativeAverageBasisSpreadOnVariableRate-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_OperationsOfAffordableHousingInvestmentsNetAndAlternativeEnergyPartnershipsNet" xlink:label="caty_OperationsOfAffordableHousingInvestmentsNetAndAlternativeEnergyPartnershipsNet" xlink:type="locator"/>
    <link:label xlink:label="caty_OperationsOfAffordableHousingInvestmentsNetAndAlternativeEnergyPartnershipsNet-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Amortization of investments in low income housing and alternative energy partnerships</link:label>
    <link:label xlink:label="caty_OperationsOfAffordableHousingInvestmentsNetAndAlternativeEnergyPartnershipsNet-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The amount of expense associated with the operations of affordable housing investments, net and alternative energy partnerships, net.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_OperationsOfAffordableHousingInvestmentsNetAndAlternativeEnergyPartnershipsNet" xlink:to="caty_OperationsOfAffordableHousingInvestmentsNetAndAlternativeEnergyPartnershipsNet-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BankAcceptancesExecutedAndOutstanding" xlink:label="us-gaap_BankAcceptancesExecutedAndOutstanding" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_BankAcceptancesExecutedAndOutstanding-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acceptances outstanding</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BankAcceptancesExecutedAndOutstanding" xlink:to="us-gaap_BankAcceptancesExecutedAndOutstanding-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss" xlink:label="us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Temporarily impaired securities, total unrealized losses</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss" xlink:to="us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_Deposits" xlink:label="us-gaap_Deposits" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_Deposits-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_Deposits</link:label>
    <link:label xlink:label="us-gaap_Deposits-label" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total deposits</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Deposits" xlink:to="us-gaap_Deposits-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_TroubledDebtRestructuringSpecificReserves" xlink:label="caty_TroubledDebtRestructuringSpecificReserves" xlink:type="locator"/>
    <link:label xlink:label="caty_TroubledDebtRestructuringSpecificReserves-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">caty_TroubledDebtRestructuringSpecificReserves</link:label>
    <link:label xlink:label="caty_TroubledDebtRestructuringSpecificReserves-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Troubled Debt Restructuring, Specific Reserves</link:label>
    <link:label xlink:label="caty_TroubledDebtRestructuringSpecificReserves-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the amount of specific reserves associated with troubled debt restructurings.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_TroubledDebtRestructuringSpecificReserves" xlink:to="caty_TroubledDebtRestructuringSpecificReserves-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeAverageFixedInterestRate" xlink:label="us-gaap_DerivativeAverageFixedInterestRate" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DerivativeAverageFixedInterestRate-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Weighted average fixed rate-pay</link:label>
    <link:label xlink:label="us-gaap_DerivativeAverageFixedInterestRate-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Weighted average fixed rate-pay</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeAverageFixedInterestRate" xlink:to="us-gaap_DerivativeAverageFixedInterestRate-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_PercentageOfChargeOffToContractualBalancesForImpairedLoans" xlink:label="caty_PercentageOfChargeOffToContractualBalancesForImpairedLoans" xlink:type="locator"/>
    <link:label xlink:label="caty_PercentageOfChargeOffToContractualBalancesForImpairedLoans-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">caty_PercentageOfChargeOffToContractualBalancesForImpairedLoans</link:label>
    <link:label xlink:label="caty_PercentageOfChargeOffToContractualBalancesForImpairedLoans-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Percentage Of Charge Off To Contractual Balances For Impaired Loans</link:label>
    <link:label xlink:label="caty_PercentageOfChargeOffToContractualBalancesForImpairedLoans-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Percentage of charge-off to contractual balances for impaired loans.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_PercentageOfChargeOffToContractualBalancesForImpairedLoans" xlink:to="caty_PercentageOfChargeOffToContractualBalancesForImpairedLoans-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss" xlink:label="us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Temporarily impaired securities, less than 12 months, unrealized losses</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss" xlink:to="us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss" xlink:label="us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Temporarily impaired securities, 12 months or longer, fair value</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss" xlink:to="us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_PeriodLoanIsInPaymentDefault" xlink:label="caty_PeriodLoanIsInPaymentDefault" xlink:type="locator"/>
    <link:label xlink:label="caty_PeriodLoanIsInPaymentDefault-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">caty_PeriodLoanIsInPaymentDefault</link:label>
    <link:label xlink:label="caty_PeriodLoanIsInPaymentDefault-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Period Loan Is In Payment Default (Day)</link:label>
    <link:label xlink:label="caty_PeriodLoanIsInPaymentDefault-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Period Loan Is In Payment Default</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_PeriodLoanIsInPaymentDefault" xlink:to="caty_PeriodLoanIsInPaymentDefault-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock" xlink:label="us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Investments Classified by Contractual Maturity Date [Table Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock" xlink:to="us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeAverageVariableInterestRate" xlink:label="us-gaap_DerivativeAverageVariableInterestRate" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DerivativeAverageVariableInterestRate-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Weighted average variable rate-receive</link:label>
    <link:label xlink:label="us-gaap_DerivativeAverageVariableInterestRate-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Weighted average variable rate-receive</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeAverageVariableInterestRate" xlink:to="us-gaap_DerivativeAverageVariableInterestRate-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_ScheduleOfImpairedLoansAndRelatedAllowanceAndChargeOffTableTextBlock" xlink:label="caty_ScheduleOfImpairedLoansAndRelatedAllowanceAndChargeOffTableTextBlock" xlink:type="locator"/>
    <link:label xlink:label="caty_ScheduleOfImpairedLoansAndRelatedAllowanceAndChargeOffTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule Of Impaired Loans And Related Allowance And Charge Off [Table Text Block]</link:label>
    <link:label xlink:label="caty_ScheduleOfImpairedLoansAndRelatedAllowanceAndChargeOffTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Tabular disclosure of impaired loans and related allowance and charge-offs.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_ScheduleOfImpairedLoansAndRelatedAllowanceAndChargeOffTableTextBlock" xlink:to="caty_ScheduleOfImpairedLoansAndRelatedAllowanceAndChargeOffTableTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherCommitment" xlink:label="us-gaap_OtherCommitment" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_OtherCommitment-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_OtherCommitment</link:label>
    <link:label xlink:label="us-gaap_OtherCommitment-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other Commitment, Total</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherCommitment" xlink:to="us-gaap_OtherCommitment-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfUnrealizedLossOnInvestmentsTableTextBlock" xlink:label="us-gaap_ScheduleOfUnrealizedLossOnInvestmentsTableTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ScheduleOfUnrealizedLossOnInvestmentsTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Unrealized Loss on Investments [Table Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfUnrealizedLossOnInvestmentsTableTextBlock" xlink:to="us-gaap_ScheduleOfUnrealizedLossOnInvestmentsTableTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NoninterestBearingDepositLiabilitiesAbstract" xlink:label="us-gaap_NoninterestBearingDepositLiabilitiesAbstract" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_NoninterestBearingDepositLiabilitiesAbstract-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deposits:</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NoninterestBearingDepositLiabilitiesAbstract" xlink:to="us-gaap_NoninterestBearingDepositLiabilitiesAbstract-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncreaseDecreaseInDeposits" xlink:label="us-gaap_IncreaseDecreaseInDeposits" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_IncreaseDecreaseInDeposits-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net increase in deposits</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInDeposits" xlink:to="us-gaap_IncreaseDecreaseInDeposits-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_ScheduleOfTroubledDebtRestructuringsTableTextBlock" xlink:label="caty_ScheduleOfTroubledDebtRestructuringsTableTextBlock" xlink:type="locator"/>
    <link:label xlink:label="caty_ScheduleOfTroubledDebtRestructuringsTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule Of Troubled Debt Restructurings [Table Text Block]</link:label>
    <link:label xlink:label="caty_ScheduleOfTroubledDebtRestructuringsTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Schedule of troubled debt restructurings [table text block].</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_ScheduleOfTroubledDebtRestructuringsTableTextBlock" xlink:to="caty_ScheduleOfTroubledDebtRestructuringsTableTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NoninterestBearingDepositLiabilities" xlink:label="us-gaap_NoninterestBearingDepositLiabilities" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_NoninterestBearingDepositLiabilities-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Non-interest-bearing demand deposits</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NoninterestBearingDepositLiabilities" xlink:to="us-gaap_NoninterestBearingDepositLiabilities-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_NonAccrualTroubledDebtRestructuringsTableTextBlock" xlink:label="caty_NonAccrualTroubledDebtRestructuringsTableTextBlock" xlink:type="locator"/>
    <link:label xlink:label="caty_NonAccrualTroubledDebtRestructuringsTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Non Accrual Troubled Debt Restructurings [Table Text Block]</link:label>
    <link:label xlink:label="caty_NonAccrualTroubledDebtRestructuringsTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">No Definition</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_NonAccrualTroubledDebtRestructuringsTableTextBlock" xlink:to="caty_NonAccrualTroubledDebtRestructuringsTableTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InterestBearingDepositLiabilitiesAbstract" xlink:label="us-gaap_InterestBearingDepositLiabilitiesAbstract" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_InterestBearingDepositLiabilitiesAbstract-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest-bearing deposits:</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestBearingDepositLiabilitiesAbstract" xlink:to="us-gaap_InterestBearingDepositLiabilitiesAbstract-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TimeDeposits" xlink:label="us-gaap_TimeDeposits" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_TimeDeposits-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Time deposits</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TimeDeposits" xlink:to="us-gaap_TimeDeposits-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_TroubledDebtRestructuringsNewRestructurings" xlink:label="caty_TroubledDebtRestructuringsNewRestructurings" xlink:type="locator"/>
    <link:label xlink:label="caty_TroubledDebtRestructuringsNewRestructurings-label" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">New restructurings</link:label>
    <link:label xlink:label="caty_TroubledDebtRestructuringsNewRestructurings-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">caty_TroubledDebtRestructuringsNewRestructurings</link:label>
    <link:label xlink:label="caty_TroubledDebtRestructuringsNewRestructurings-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">No authoritative reference available.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_TroubledDebtRestructuringsNewRestructurings" xlink:to="caty_TroubledDebtRestructuringsNewRestructurings-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock" xlink:label="us-gaap_ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Available-for-sale Securities Reconciliation [Table Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock" xlink:to="us-gaap_ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_TroubledDebtRestructuringsPaymentsReceivedInPeriod" xlink:label="caty_TroubledDebtRestructuringsPaymentsReceivedInPeriod" xlink:type="locator"/>
    <link:label xlink:label="caty_TroubledDebtRestructuringsPaymentsReceivedInPeriod-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">caty_TroubledDebtRestructuringsPaymentsReceivedInPeriod</link:label>
    <link:label xlink:label="caty_TroubledDebtRestructuringsPaymentsReceivedInPeriod-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Payments</link:label>
    <link:label xlink:label="caty_TroubledDebtRestructuringsPaymentsReceivedInPeriod-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">No authoritative reference available.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_TroubledDebtRestructuringsPaymentsReceivedInPeriod" xlink:to="caty_TroubledDebtRestructuringsPaymentsReceivedInPeriod-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_RateReductionAndPaymentDeferralMember" xlink:label="caty_RateReductionAndPaymentDeferralMember" xlink:type="locator"/>
    <link:label xlink:label="caty_RateReductionAndPaymentDeferralMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Rate Reduction and Payment Deferral [Member]</link:label>
    <link:label xlink:label="caty_RateReductionAndPaymentDeferralMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents a rate reduction and payment deferral.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_RateReductionAndPaymentDeferralMember" xlink:to="caty_RateReductionAndPaymentDeferralMember-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_NetAmountOfDerivativeLiabilitiesPresentedInTheBalanceSheetNotOffset" xlink:label="caty_NetAmountOfDerivativeLiabilitiesPresentedInTheBalanceSheetNotOffset" xlink:type="locator"/>
    <link:label xlink:label="caty_NetAmountOfDerivativeLiabilitiesPresentedInTheBalanceSheetNotOffset-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivatives liabilities not offset</link:label>
    <link:label xlink:label="caty_NetAmountOfDerivativeLiabilitiesPresentedInTheBalanceSheetNotOffset-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Net amount of derivative liabilities presented in the balance sheet not offset.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_NetAmountOfDerivativeLiabilitiesPresentedInTheBalanceSheetNotOffset" xlink:to="caty_NetAmountOfDerivativeLiabilitiesPresentedInTheBalanceSheetNotOffset-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_ActivityWithinTheTroubledDebtResturingsTableTextBlock" xlink:label="caty_ActivityWithinTheTroubledDebtResturingsTableTextBlock" xlink:type="locator"/>
    <link:label xlink:label="caty_ActivityWithinTheTroubledDebtResturingsTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Activity Within The Troubled Debt Resturings [Table Text Block]</link:label>
    <link:label xlink:label="caty_ActivityWithinTheTroubledDebtResturingsTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">No Definition</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_ActivityWithinTheTroubledDebtResturingsTableTextBlock" xlink:to="caty_ActivityWithinTheTroubledDebtResturingsTableTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue" xlink:label="us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Temporarily impaired securities, less than 12 months, fair value</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue" xlink:to="us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DepositsMoneyMarketDeposits" xlink:label="us-gaap_DepositsMoneyMarketDeposits" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DepositsMoneyMarketDeposits-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Money market deposits</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DepositsMoneyMarketDeposits" xlink:to="us-gaap_DepositsMoneyMarketDeposits-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlock" xlink:label="us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accounting Standards Update and Change in Accounting Principle [Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlock" xlink:to="us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DepositsNegotiableOrderOfWithdrawalNOW" xlink:label="us-gaap_DepositsNegotiableOrderOfWithdrawalNOW" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DepositsNegotiableOrderOfWithdrawalNOW-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">NOW deposits</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DepositsNegotiableOrderOfWithdrawalNOW" xlink:to="us-gaap_DepositsNegotiableOrderOfWithdrawalNOW-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_ReserveToImpairedLoans" xlink:label="caty_ReserveToImpairedLoans" xlink:type="locator"/>
    <link:label xlink:label="caty_ReserveToImpairedLoans-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Reserve for impaired loans</link:label>
    <link:label xlink:label="caty_ReserveToImpairedLoans-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Reserve To Impaired Loans</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_ReserveToImpairedLoans" xlink:to="caty_ReserveToImpairedLoans-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue" xlink:label="us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue</link:label>
    <link:label xlink:label="us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Temporarily impaired securities, 12 months or longer, fair value</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue" xlink:to="us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfNewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlock" xlink:label="us-gaap_ScheduleOfNewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ScheduleOfNewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accounting Standards Update and Change in Accounting Principle [Table Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfNewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlock" xlink:to="us-gaap_ScheduleOfNewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_ReserveToNonImpairedLoans" xlink:label="caty_ReserveToNonImpairedLoans" xlink:type="locator"/>
    <link:label xlink:label="caty_ReserveToNonImpairedLoans-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Reserve for non-impaired loans</link:label>
    <link:label xlink:label="caty_ReserveToNonImpairedLoans-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Reserve To Non-Impaired Loans</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_ReserveToNonImpairedLoans" xlink:to="caty_ReserveToNonImpairedLoans-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue" xlink:label="us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Temporarily impaired securities, total fair value</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue" xlink:to="us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_ReserveForOffBalanceSheetCreditCommitments" xlink:label="caty_ReserveForOffBalanceSheetCreditCommitments" xlink:type="locator"/>
    <link:label xlink:label="caty_ReserveForOffBalanceSheetCreditCommitments-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Reserve for off-balance sheet credit commitments</link:label>
    <link:label xlink:label="caty_ReserveForOffBalanceSheetCreditCommitments-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Reserve For Off-Balance Sheet Credit Commitments</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_ReserveForOffBalanceSheetCreditCommitments" xlink:to="caty_ReserveForOffBalanceSheetCreditCommitments-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DepositsSavingsDeposits" xlink:label="us-gaap_DepositsSavingsDeposits" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DepositsSavingsDeposits-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Savings deposits</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DepositsSavingsDeposits" xlink:to="us-gaap_DepositsSavingsDeposits-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsMeasuredOnNonrecurringBasisTextBlock" xlink:label="us-gaap_FairValueAssetsMeasuredOnNonrecurringBasisTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_FairValueAssetsMeasuredOnNonrecurringBasisTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value Measurements, Nonrecurring [Table Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueAssetsMeasuredOnNonrecurringBasisTextBlock" xlink:to="us-gaap_FairValueAssetsMeasuredOnNonrecurringBasisTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherCommitmentsAxis" xlink:label="us-gaap_OtherCommitmentsAxis" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_OtherCommitmentsAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Commitments [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherCommitmentsAxis" xlink:to="us-gaap_OtherCommitmentsAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherCommitmentsDomain" xlink:label="us-gaap_OtherCommitmentsDomain" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_OtherCommitmentsDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Commitments [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherCommitmentsDomain" xlink:to="us-gaap_OtherCommitmentsDomain-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ContractualInterestRateReductionMember" xlink:label="us-gaap_ContractualInterestRateReductionMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ContractualInterestRateReductionMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Contractual Interest Rate Reduction [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ContractualInterestRateReductionMember" xlink:to="us-gaap_ContractualInterestRateReductionMember-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash Flows from Financing Activities</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock" xlink:label="us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock" xlink:to="us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount" xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount</link:label>
    <link:label xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Effective Income Tax Rate Reconciliation, Tax Expense (Benefit), Share-based Payment Arrangement, Amount</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount" xlink:to="us-gaap_EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral" xlink:label="us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral</link:label>
    <link:label xlink:label="us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Derivatives</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral" xlink:to="us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_EstimatedSalesCostAppliedToCollateral" xlink:label="caty_EstimatedSalesCostAppliedToCollateral" xlink:type="locator"/>
    <link:label xlink:label="caty_EstimatedSalesCostAppliedToCollateral-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">caty_EstimatedSalesCostAppliedToCollateral</link:label>
    <link:label xlink:label="caty_EstimatedSalesCostAppliedToCollateral-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Estimated Sales Cost Applied To Collateral</link:label>
    <link:label xlink:label="caty_EstimatedSalesCostAppliedToCollateral-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">No authoritative reference available.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_EstimatedSalesCostAppliedToCollateral" xlink:to="caty_EstimatedSalesCostAppliedToCollateral-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_ExpectedLifeOfWarrants" xlink:label="caty_ExpectedLifeOfWarrants" xlink:type="locator"/>
    <link:label xlink:label="caty_ExpectedLifeOfWarrants-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">caty_ExpectedLifeOfWarrants</link:label>
    <link:label xlink:label="caty_ExpectedLifeOfWarrants-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Expected Life Of Warrants (Year)</link:label>
    <link:label xlink:label="caty_ExpectedLifeOfWarrants-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">No authoritative reference available.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_ExpectedLifeOfWarrants" xlink:to="caty_ExpectedLifeOfWarrants-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax" xlink:label="us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Unrealized holding gains/(losses) on cash flow hedge derivatives</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax" xlink:to="us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeNet" xlink:label="us-gaap_DerivativeFairValueOfDerivativeNet" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DerivativeFairValueOfDerivativeNet-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Option contracts, fair value</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeFairValueOfDerivativeNet" xlink:to="us-gaap_DerivativeFairValueOfDerivativeNet-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_NotionalAmountOfForeignCurrencyDerivativePurchaseContractsWithGain" xlink:label="caty_NotionalAmountOfForeignCurrencyDerivativePurchaseContractsWithGain" xlink:type="locator"/>
    <link:label xlink:label="caty_NotionalAmountOfForeignCurrencyDerivativePurchaseContractsWithGain-label" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Foreign exchange contracts with gain</link:label>
    <link:label xlink:label="caty_NotionalAmountOfForeignCurrencyDerivativePurchaseContractsWithGain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">caty_NotionalAmountOfForeignCurrencyDerivativePurchaseContractsWithGain</link:label>
    <link:label xlink:label="caty_NotionalAmountOfForeignCurrencyDerivativePurchaseContractsWithGain-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Notional amount of foreign currency derivative purchase contracts with gain.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_NotionalAmountOfForeignCurrencyDerivativePurchaseContractsWithGain" xlink:to="caty_NotionalAmountOfForeignCurrencyDerivativePurchaseContractsWithGain-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_ForeignExchangeContractAssetFairValueGainDisclosure" xlink:label="caty_ForeignExchangeContractAssetFairValueGainDisclosure" xlink:type="locator"/>
    <link:label xlink:label="caty_ForeignExchangeContractAssetFairValueGainDisclosure-label" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Foreign exchange contracts with gain, fair value</link:label>
    <link:label xlink:label="caty_ForeignExchangeContractAssetFairValueGainDisclosure-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">caty_ForeignExchangeContractAssetFairValueGainDisclosure</link:label>
    <link:label xlink:label="caty_ForeignExchangeContractAssetFairValueGainDisclosure-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Foreign exchange contract asset fair value gain disclosure.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_ForeignExchangeContractAssetFairValueGainDisclosure" xlink:to="caty_ForeignExchangeContractAssetFairValueGainDisclosure-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_OtherBorrowingsFairValueDisclosure" xlink:label="caty_OtherBorrowingsFairValueDisclosure" xlink:type="locator"/>
    <link:label xlink:label="caty_OtherBorrowingsFairValueDisclosure-label" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Other borrowings</link:label>
    <link:label xlink:label="caty_OtherBorrowingsFairValueDisclosure-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">caty_OtherBorrowingsFairValueDisclosure</link:label>
    <link:label xlink:label="caty_OtherBorrowingsFairValueDisclosure-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other borrowings</link:label>
    <link:label xlink:label="caty_OtherBorrowingsFairValueDisclosure-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fair value portion of other borrowings.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_OtherBorrowingsFairValueDisclosure" xlink:to="caty_OtherBorrowingsFairValueDisclosure-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommitmentsToExtendCreditMember" xlink:label="us-gaap_CommitmentsToExtendCreditMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_CommitmentsToExtendCreditMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Commitments to Extend Credit [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommitmentsToExtendCreditMember" xlink:to="us-gaap_CommitmentsToExtendCreditMember-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_NotionalAmountOfForeignCurrencyDerivativePurchaseContractsWithLoss" xlink:label="caty_NotionalAmountOfForeignCurrencyDerivativePurchaseContractsWithLoss" xlink:type="locator"/>
    <link:label xlink:label="caty_NotionalAmountOfForeignCurrencyDerivativePurchaseContractsWithLoss-label" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Foreign exchange contracts with loss</link:label>
    <link:label xlink:label="caty_NotionalAmountOfForeignCurrencyDerivativePurchaseContractsWithLoss-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">caty_NotionalAmountOfForeignCurrencyDerivativePurchaseContractsWithLoss</link:label>
    <link:label xlink:label="caty_NotionalAmountOfForeignCurrencyDerivativePurchaseContractsWithLoss-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Notional amount of foreign currency derivative purchase contracts with loss.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_NotionalAmountOfForeignCurrencyDerivativePurchaseContractsWithLoss" xlink:to="caty_NotionalAmountOfForeignCurrencyDerivativePurchaseContractsWithLoss-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_ForeignCurrencyContractAssetFairValueLossDisclosure" xlink:label="caty_ForeignCurrencyContractAssetFairValueLossDisclosure" xlink:type="locator"/>
    <link:label xlink:label="caty_ForeignCurrencyContractAssetFairValueLossDisclosure-label" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Foreign exchange contracts with loss, fair value</link:label>
    <link:label xlink:label="caty_ForeignCurrencyContractAssetFairValueLossDisclosure-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">caty_ForeignCurrencyContractAssetFairValueLossDisclosure</link:label>
    <link:label xlink:label="caty_ForeignCurrencyContractAssetFairValueLossDisclosure-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Foreign currency contract asset fair value loss disclosure.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_ForeignCurrencyContractAssetFairValueLossDisclosure" xlink:to="caty_ForeignCurrencyContractAssetFairValueLossDisclosure-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_CommitmentsToExtendNotionalAmount" xlink:label="caty_CommitmentsToExtendNotionalAmount" xlink:type="locator"/>
    <link:label xlink:label="caty_CommitmentsToExtendNotionalAmount-label" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Commitments to extend credit</link:label>
    <link:label xlink:label="caty_CommitmentsToExtendNotionalAmount-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">caty_CommitmentsToExtendNotionalAmount</link:label>
    <link:label xlink:label="caty_CommitmentsToExtendNotionalAmount-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Commitments To Extend Notional Amount</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_CommitmentsToExtendNotionalAmount" xlink:to="caty_CommitmentsToExtendNotionalAmount-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_CommitmentsToExtendCreditFairValue" xlink:label="caty_CommitmentsToExtendCreditFairValue" xlink:type="locator"/>
    <link:label xlink:label="caty_CommitmentsToExtendCreditFairValue-label" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Commitments to extend credit, fair value</link:label>
    <link:label xlink:label="caty_CommitmentsToExtendCreditFairValue-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">caty_CommitmentsToExtendCreditFairValue</link:label>
    <link:label xlink:label="caty_CommitmentsToExtendCreditFairValue-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Commitments to Extend Credit, Fair Value</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_CommitmentsToExtendCreditFairValue" xlink:to="caty_CommitmentsToExtendCreditFairValue-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_StandbyLettersOfCreditNotionalAmount" xlink:label="caty_StandbyLettersOfCreditNotionalAmount" xlink:type="locator"/>
    <link:label xlink:label="caty_StandbyLettersOfCreditNotionalAmount-label" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Standby letters of credit</link:label>
    <link:label xlink:label="caty_StandbyLettersOfCreditNotionalAmount-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">caty_StandbyLettersOfCreditNotionalAmount</link:label>
    <link:label xlink:label="caty_StandbyLettersOfCreditNotionalAmount-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Standby Letters Of Credit Notional Amount</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_StandbyLettersOfCreditNotionalAmount" xlink:to="caty_StandbyLettersOfCreditNotionalAmount-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_StandbyLettersOfCreditFairValue" xlink:label="caty_StandbyLettersOfCreditFairValue" xlink:type="locator"/>
    <link:label xlink:label="caty_StandbyLettersOfCreditFairValue-label" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Standby letters of credit, fair value</link:label>
    <link:label xlink:label="caty_StandbyLettersOfCreditFairValue-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">caty_StandbyLettersOfCreditFairValue</link:label>
    <link:label xlink:label="caty_StandbyLettersOfCreditFairValue-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Standby Letters of Credit, Fair Value</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_StandbyLettersOfCreditFairValue" xlink:to="caty_StandbyLettersOfCreditFairValue-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OciBeforeReclassificationsBeforeTaxAttributableToParent" xlink:label="us-gaap_OciBeforeReclassificationsBeforeTaxAttributableToParent" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_OciBeforeReclassificationsBeforeTaxAttributableToParent-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net unrealized (losses)/gains arising during the period, pre-tax</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OciBeforeReclassificationsBeforeTaxAttributableToParent" xlink:to="us-gaap_OciBeforeReclassificationsBeforeTaxAttributableToParent-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_OtherLettersOfCreditNotionalAmount" xlink:label="caty_OtherLettersOfCreditNotionalAmount" xlink:type="locator"/>
    <link:label xlink:label="caty_OtherLettersOfCreditNotionalAmount-label" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Other letters of credit</link:label>
    <link:label xlink:label="caty_OtherLettersOfCreditNotionalAmount-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">caty_OtherLettersOfCreditNotionalAmount</link:label>
    <link:label xlink:label="caty_OtherLettersOfCreditNotionalAmount-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other Letters Of Credit Notional Amount</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_OtherLettersOfCreditNotionalAmount" xlink:to="caty_OtherLettersOfCreditNotionalAmount-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent" xlink:label="us-gaap_ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent</link:label>
    <link:label xlink:label="us-gaap_ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Reclassification adjustment for net losses/(gains) included in net income, pre-tax</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent" xlink:to="us-gaap_ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_OtherLettersOfCreditFairValue" xlink:label="caty_OtherLettersOfCreditFairValue" xlink:type="locator"/>
    <link:label xlink:label="caty_OtherLettersOfCreditFairValue-label" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Other letters of credit, fair value</link:label>
    <link:label xlink:label="caty_OtherLettersOfCreditFairValue-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">caty_OtherLettersOfCreditFairValue</link:label>
    <link:label xlink:label="caty_OtherLettersOfCreditFairValue-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other Letters of Credit, Fair Value</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_OtherLettersOfCreditFairValue" xlink:to="caty_OtherLettersOfCreditFairValue-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_BillOfLadingGuaranteesNotionalAmount" xlink:label="caty_BillOfLadingGuaranteesNotionalAmount" xlink:type="locator"/>
    <link:label xlink:label="caty_BillOfLadingGuaranteesNotionalAmount-label" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Bill of lading guarantees</link:label>
    <link:label xlink:label="caty_BillOfLadingGuaranteesNotionalAmount-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">caty_BillOfLadingGuaranteesNotionalAmount</link:label>
    <link:label xlink:label="caty_BillOfLadingGuaranteesNotionalAmount-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Bill Of Lading Guarantees Notional Amount</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_BillOfLadingGuaranteesNotionalAmount" xlink:to="caty_BillOfLadingGuaranteesNotionalAmount-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_BillOfLadingGuaranteesFairValue" xlink:label="caty_BillOfLadingGuaranteesFairValue" xlink:type="locator"/>
    <link:label xlink:label="caty_BillOfLadingGuaranteesFairValue-label" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Bill of lading guarantees, fair value</link:label>
    <link:label xlink:label="caty_BillOfLadingGuaranteesFairValue-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">caty_BillOfLadingGuaranteesFairValue</link:label>
    <link:label xlink:label="caty_BillOfLadingGuaranteesFairValue-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Bill of Lading Guarantees, Fair Value</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_BillOfLadingGuaranteesFairValue" xlink:to="caty_BillOfLadingGuaranteesFairValue-label" xlink:type="arc"/>
    <link:loc xlink:href="caty-20210331.xsd#caty_ScheduleOfFairValueOfFinancialInstrumentsTableTextBlock" xlink:label="caty_ScheduleOfFairValueOfFinancialInstrumentsTableTextBlock" xlink:type="locator"/>
    <link:label xlink:label="caty_ScheduleOfFairValueOfFinancialInstrumentsTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule Of Fair Value Of Financial Instruments [Table Text Block]</link:label>
    <link:label xlink:label="caty_ScheduleOfFairValueOfFinancialInstrumentsTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Schedule of Fair Value of Financial Instruments.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="caty_ScheduleOfFairValueOfFinancialInstrumentsTableTextBlock" xlink:to="caty_ScheduleOfFairValueOfFinancialInstrumentsTableTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="us-gaap_StockholdersEquity" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_StockholdersEquity-label" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Stockholders' equity</link:label>
    <link:label xlink:label="us-gaap_StockholdersEquity-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_StockholdersEquity</link:label>
    <link:label xlink:label="us-gaap_StockholdersEquity-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stockholders' Equity Attributable to Parent, Ending Balance</link:label>
    <link:label xlink:label="us-gaap_StockholdersEquity-label" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total equity</link:label>
    <link:label xlink:label="us-gaap_StockholdersEquity-label" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Beginning balance, loss, net of tax</link:label>
    <link:label xlink:label="us-gaap_StockholdersEquity-label" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Ending balance, loss, net of tax</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquity" xlink:to="us-gaap_StockholdersEquity-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="us-gaap_StatementClassOfStockAxis" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_StatementClassOfStockAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Class of Stock [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementClassOfStockAxis" xlink:to="us-gaap_StatementClassOfStockAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock" xlink:label="us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock" xlink:to="us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax" xlink:label="us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Investment securities available for sale, gross unrealized losses</link:label>
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    <link:label xlink:label="us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Securities available-for-sale, amortized cost</link:label>
    <link:label xlink:label="us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis-label" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total, Amortized Cost</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax" xlink:label="us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax</link:label>
    <link:label xlink:label="us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unrealized loss, net of taxes</link:label>
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    <link:label xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Due after one year through five years, Amortized Cost</link:label>
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