    <SEC-DOCUMENT>0001193125-17-332119-index.html : 20171103
    <SEC-HEADER>0001193125-17-332119.hdr.sgml : 20171103
    <ACCEPTANCE-DATETIME>20171103104208
    ACCESSION NUMBER:		0001193125-17-332119
    CONFORMED SUBMISSION TYPE:	N-CSR
    PUBLIC DOCUMENT COUNT:		24
    CONFORMED PERIOD OF REPORT:	20170831
    FILED AS OF DATE:		20171103
    DATE AS OF CHANGE:		20171103
    EFFECTIVENESS DATE:		20171103

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			BLACKROCK MUNICIPAL INCOME QUALITY TRUST
    		CENTRAL INDEX KEY:			0001181187
    		IRS NUMBER:				000000000
    		FISCAL YEAR END:			0831

    	FILING VALUES:
    		FORM TYPE:		N-CSR
    		SEC ACT:		1940 Act
    		SEC FILE NUMBER:	811-21178
    		FILM NUMBER:		171175046

    	BUSINESS ADDRESS:
    		STREET 1:		100 BELLEVUE PARKWAY
    		CITY:			WILMINGTON
    		STATE:			DE
    		ZIP:			19809
    		BUSINESS PHONE:		800-441-7762

    	MAIL ADDRESS:
    		STREET 1:		100 BELLEVUE PARKWAY
    		CITY:			WILMINGTON
    		STATE:			DE
    		ZIP:			19809

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	BLACKROCK INSURED MUNICIPAL INCOME TRUST
    		DATE OF NAME CHANGE:	20020904

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	BLACKROCK MUNICIPAL INCOME TRUST III
    		DATE OF NAME CHANGE:	20020819
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>N-CSR
    <SEQUENCE>1
    <FILENAME>d438639dncsr.htm
    <DESCRIPTION>BLACKROCK MUNICIPAL INCOME QUALITY TRUST
    <TEXT>
    Document 1 - file: d438639dncsr.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.CERT
    <SEQUENCE>2
    <FILENAME>d438639dex99cert.htm
    <DESCRIPTION>CERTIFICATION PURSUANT TO SECTION 302
    <TEXT>
    Document 2 - file: d438639dex99cert.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.906CERT
    <SEQUENCE>3
    <FILENAME>d438639dex99906cert.htm
    <DESCRIPTION>CERTIFICATION PURSUANT TO SECTION 906
    <TEXT>
    Document 3 - file: d438639dex99906cert.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.PROXY.POL
    <SEQUENCE>4
    <FILENAME>d438639dex99proxypol.htm
    <DESCRIPTION>PROXY VOTING POLICY
    <TEXT>
    Document 4 - file: d438639dex99proxypol.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.CORP.GOV
    <SEQUENCE>5
    <FILENAME>d438639dex99corpgov.htm
    <DESCRIPTION>GLOBAL CORPORATE GOVERNANCE AND ENGAGEMENT PRINCIPLES
    <TEXT>
    Document 5 - file: d438639dex99corpgov.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>g438639g27m20.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 6 - file: g438639g27m20.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>g438639g31n91.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 7 - file: g438639g31n91.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>g438639g38l19.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 8 - file: g438639g38l19.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>g438639g51e43.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 9 - file: g438639g51e43.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>g438639g65b16.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 10 - file: g438639g65b16.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>g438639g72f30.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 11 - file: g438639g72f30.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>12
    <FILENAME>g438639g80a74.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 12 - file: g438639g80a74.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>13
    <FILENAME>g438639g84w81.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 13 - file: g438639g84w81.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>14
    <FILENAME>g438639g98u13.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 14 - file: g438639g98u13.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>15
    <FILENAME>g438639leaf.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 15 - file: g438639leaf.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>16
    <FILENAME>g44272755544.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 16 - file: g44272755544.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>17
    <FILENAME>g442727black.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 17 - file: g442727black.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>18
    <FILENAME>g442727canu.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 18 - file: g442727canu.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>19
    <FILENAME>g442727hbb7.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 19 - file: g442727hbb7.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>20
    <FILENAME>g442727head333.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 20 - file: g442727head333.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>21
    <FILENAME>g442727newblack.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 21 - file: g442727newblack.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>22
    <FILENAME>g442727small.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 22 - file: g442727small.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>23
    <FILENAME>g449001photo_01mips.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 23 - file: g449001photo_01mips.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>24
    <FILENAME>g449001sig_01mips.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 24 - file: g449001sig_01mips.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>