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Deposits, Prepayment, Other Receivables and Deferred IPO Cost, Net (Details) - Schedule of Movement of Allowances for Expected Credit Loss - USD ($) | 6 Months Ended | 12 Months Ended
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Jun. 30, 2024 | Dec. 31, 2023 | Dec. 31, 2023 | Dec. 31, 2022
Schedule of Movement of Allowances for Expected Credit Loss [Abstract] |  |  |  |
Balance at beginning of the year | $ (14) | $ (141) | $ (141) | $ (115)
Reversal of provision (Provision) |  | 127 | 127 | (30)
Effect of currency translation adjustment |  |  |  | 4
Ending balance | $ (14) | $ (14) | $ (14) | $ (141)

X
- Definition Represent the amount of allowances for expected credit loss. + References No definition available. + Details
Name: | nivf_AllowancesForExpectedCreditLoss
Namespace Prefix: | nivf_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Represent the amount of effect of currency translation adjustment. + References No definition available. + Details
Name: | nivf_AllowancesForExpectedCreditLossEffectOfCurrencyTranslationAdjustment
Namespace Prefix: | nivf_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Repressent the amount of reversal of provision (Provision). + References No definition available. + Details
Name: | nivf_AllowancesForExpectedCreditLossReversalOfProvisionProvision
Namespace Prefix: | nivf_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | nivf_ScheduleOfMovementOfAllowancesForExpectedCreditLossAbstract
Namespace Prefix: | nivf_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration