    <SEC-DOCUMENT>0001193125-18-292939-index.html : 20181004
    <SEC-HEADER>0001193125-18-292939.hdr.sgml : 20181004
    <ACCEPTANCE-DATETIME>20181004105013
    ACCESSION NUMBER:		0001193125-18-292939
    CONFORMED SUBMISSION TYPE:	N-CSR
    PUBLIC DOCUMENT COUNT:		20
    CONFORMED PERIOD OF REPORT:	20180731
    FILED AS OF DATE:		20181004
    DATE AS OF CHANGE:		20181004
    EFFECTIVENESS DATE:		20181004

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			BLACKROCK MUNIYIELD NEW YORK QUALITY FUND, INC.
    		CENTRAL INDEX KEY:			0000882150
    		IRS NUMBER:				223144223
    		FISCAL YEAR END:			0930

    	FILING VALUES:
    		FORM TYPE:		N-CSR
    		SEC ACT:		1940 Act
    		SEC FILE NUMBER:	811-06500
    		FILM NUMBER:		181107201

    	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 MUNIYIELD NEW YORK INSURED FUND, INC.
    		DATE OF NAME CHANGE:	20070612

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	MUNIYIELD NEW YORK INSURED FUND INC
    		DATE OF NAME CHANGE:	19920717

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	NEW YORK MUNIYIELD FUND INC
    		DATE OF NAME CHANGE:	19600201
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>N-CSR
    <SEQUENCE>1
    <FILENAME>d495734dncsr.htm
    <DESCRIPTION>BLACKROCK MUNIYIELD NEW YORK QUALITY FUND, INC.
    <TEXT>
    Document 1 - file: d495734dncsr.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.CERT
    <SEQUENCE>2
    <FILENAME>d495734dex99cert.htm
    <DESCRIPTION>CERTIFICATION PURSUANT TO SECTION 302
    <TEXT>
    Document 2 - file: d495734dex99cert.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.906CERT
    <SEQUENCE>3
    <FILENAME>d495734dex99906cert.htm
    <DESCRIPTION>CERTIFICATION PURSUANT TO SECTION 906
    <TEXT>
    Document 3 - file: d495734dex99906cert.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.PROXY.POL
    <SEQUENCE>4
    <FILENAME>d495734dex99proxypol.htm
    <DESCRIPTION>CLOSED-END FUND PROXY VOTING POLICY
    <TEXT>
    Document 4 - file: d495734dex99proxypol.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.CORP.GOV
    <SEQUENCE>5
    <FILENAME>d495734dex99corpgov.htm
    <DESCRIPTION>GLOBAL CORPORATE GOVERNANCE & ENGAGEMENT PRINCIPLES
    <TEXT>
    Document 5 - file: d495734dex99corpgov.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>g464929g03p04.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 6 - file: g464929g03p04.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>g464929g06p07.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 7 - file: g464929g06p07.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>g464929g12k03.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 8 - file: g464929g12k03.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>g464929g29k39.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 9 - file: g464929g29k39.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>g464929g65b16.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 10 - file: g464929g65b16.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>g464929g74u80.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 11 - file: g464929g74u80.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>12
    <FILENAME>g464929g98u13.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 12 - file: g464929g98u13.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>13
    <FILENAME>g464929leaf.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 13 - file: g464929leaf.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>14
    <FILENAME>g586217photo_01mips.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 14 - file: g586217photo_01mips.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>15
    <FILENAME>g586217sig_01mips.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 15 - file: g586217sig_01mips.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>16
    <FILENAME>g589189dsp015.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 16 - file: g589189dsp015.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>17
    <FILENAME>g589189dsp017.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 17 - file: g589189dsp017.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>18
    <FILENAME>g589189dsp16.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 18 - file: g589189dsp16.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>19
    <FILENAME>g589189dsp19.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 19 - file: g589189dsp19.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>20
    <FILENAME>g589189dsp19a.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 20 - file: g589189dsp19a.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>