Item 2 –	Controls and Procedures

2(a) –	The registrant’s principal executive and principal financial officers, or persons performing similar functions, have concluded that the registrant’s disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940, as amended (the “1940 Act”)) are effective as of a date within 90 days of the filing of this report based on the evaluation of these controls and procedures required by Rule 30a-3(b) under the 1940 Act and Rule 13a-15(b) under the Securities Exchange Act of 1934, as amended.

2(b) –	There were no changes in the registrant’s internal control over financial reporting (as defined in Rule 30a-3(d) under the 1940 Act) that occurred during the registrant’s last fiscal quarter that have materially affected, or are reasonably likely to materially affect, the registrant’s internal control over financial reporting.

Item 3 –	Exhibits

	Certifications – Attached hereto

	Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	BlackRock MuniVest Fund II, Inc.

	By:	/s/ John M. Perlowski
		John M. Perlowski
		Chief Executive Officer (principal executive officer) of
		BlackRock MuniVest Fund II, Inc.

	Date: September 25, 2012

	Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

	By:	/s/ John M. Perlowski
		John M. Perlowski
		Chief Executive Officer (principal executive officer) of
		BlackRock MuniVest Fund II, Inc.

	Date: September 25, 2012

	By:	/s/ Neal J. Andrews
		Neal J. Andrews
		Chief Financial Officer (principal financial officer) of
		BlackRock MuniVest Fund II, Inc.

	Date: September 25, 2012



Schedule of Investments July 31, 2012 (Unaudited)	BlackRock MuniVest Fund II, Inc. (MVT)
Schedule of Investments July 31, 2012 (Unaudited)	(Percentages shown are based on Net Assets)


Municipal Bonds	Par (000)		Value
Alabama — 0.4%
County of Jefferson Alabama, RB, Series A, 5.25%, 1/01/19	$	1,490	$	1,491,639
Alaska — 1.0%
Northern Tobacco Securitization Corp., Refunding RB, Tobacco Settlement, Asset-Backed, Series A:
4.63%, 6/01/23		1,720		1,714,823
5.00%, 6/01/46		2,250		1,764,967
				3,479,790
Arizona — 0.8%
Maricopa County IDA Arizona, RB, Arizona Charter Schools Project, Series A, 6.75%, 7/01/29		1,000		701,160
Pima County IDA, RB:
6.75%, 7/01/21		305		306,345
Arizona Charter Schools Project, Series C, 6.75%, 7/01/31		1,890		1,895,160
				2,902,665
California — 10.6%
California Health Facilities Financing Authority, RB:
Stanford Hospital and Clinics, Series A, 5.00%, 8/15/51		1,180		1,294,153
Sutter Health, Series B, 6.00%, 8/15/42		3,170		3,807,170
California Health Facilities Financing Authority, Refunding RB, St. Joseph Health System, Series A, 5.75%, 7/01/39		2,200		2,541,132
California State Public Works Board, RB, Various Capital Projects, Sub-Series I-1, 6.38%, 11/01/34		1,185		1,439,479
Los Angeles Department of Airports, Refunding RB, Series A, 5.25%, 5/15/39		800		901,400
San Marcos Unified School District, CAB, GO, Election of 2010, Series B (a):
5.11%, 8/01/41		5,000		1,157,350
5.06%, 8/01/42		2,000		446,660
State of California, GO, Various Purpose:
6.00%, 3/01/33		2,525		3,110,396
6.50%, 4/01/33		14,925		18,642,220
State of California, GO, Refunding, Various Purpose, 5.00%, 10/01/41		3,050		3,328,435
				36,668,395
Colorado — 2.2%
Colorado Health Facilities Authority, RB, Catholic Health Initiatives, Series D, 6.25%, 10/01/33		1,060		1,257,828

Municipal Bonds	Par (000)		Value
Colorado (concluded)
Colorado Health Facilities Authority, Refunding RB, The Evangelical Lutheran Good Samaritan Society Project, 5.00%, 12/01/42	$	1,000	$	1,059,710
Plaza Metropolitan District No. 1 Colorado, Tax Allocation Bonds, Public Improvement Fee, Tax Increment:
8.00%, 12/01/25		3,300		3,423,552
Subordinate, 8.13%, 12/01/25		820		819,918
University of Colorado, RB, Series A, 5.75%, 6/01/28		750		945,157
				7,506,165
Connecticut — 3.7%
Connecticut State Health & Educational Facility Authority, RB, Ascension Health Senior Credit, 5.00%, 11/15/40		1,375		1,514,040
Connecticut State Health & Educational Facility Authority, Refunding RB, Wesleyan University, 5.00%, 7/01/35		3,385		3,856,293
Mohegan Tribe of Indians of Connecticut, Refunding RB, Public Improvement, Priority Distribution, 6.25%, 1/01/31		950		950,475
State of Connecticut, GO, Refunding, Series C:
5.00%, 6/01/23		3,150		3,974,607
5.00%, 6/01/24		2,005		2,506,571
				12,801,986
Delaware — 1.6%
County of Sussex Delaware, RB, NRG Energy, Inc., Indian River Project, 6.00%, 10/01/40		1,125		1,277,472
Delaware State EDA, RB, Exempt Facilities, Indian River Power, 5.38%, 10/01/45		4,065		4,400,281
				5,677,753
District of Columbia — 2.2%
Metropolitan Washington Airports Authority, Refunding RB:
CAB, Second Senior Lien, Series B, (AGC), 5.00%, 10/01/33 (a)		6,590		2,317,373
CAB, Second Senior Lien, Series B (AGC), 5.04%, 10/01/34 (a)		4,830		1,602,739
CAB, Second Senior Lien, Series B (AGC), 5.07%, 10/01/35 (a)		6,515		2,043,039
First Senior Lien, Series A, 5.25%, 10/01/44		1,500		1,661,040
				7,624,191



Schedule of Investments (continued)	BlackRock MuniVest Fund II, Inc. (MVT)
Schedule of Investments (continued)	(Percentages shown are based on Net Assets)


Municipal Bonds	Par (000)		Value
Florida — 3.4%
Citizens Property Insurance Corp., RB, Senior Secured, Series A-1, 5.00%, 6/01/21	$	1,700	$	1,961,188
County of Miami-Dade Florida, Refunding RB, Miami International Airport, Series A-1, 5.38%, 10/01/41		1,165		1,323,370
Fiddlers Creek Community Development District No. 2, Special Assessment Bonds, Series A, 6.38%, 5/01/35 (b)(c)		2,350		1,235,042
Hillsborough County IDA, RB, National Gypsum Co., Series B, AMT, 7.13%, 4/01/30		2,720		2,720,816
Mid-Bay Bridge Authority, RB, Series A, 7.25%, 10/01/40		2,265		2,858,906
Midtown Miami Community Development District, Special Assessment Bonds, Series A, 6.25%, 5/01/37		915		935,853
Palm Coast Park Community Development District, Special Assessment Bonds, 5.70%, 5/01/37		1,175		798,718
				11,833,893
Georgia — 4.1%
DeKalb Private Hospital Authority, Refunding RB, Children’s Healthcare, 5.25%, 11/15/39		130		143,812
Fulton County Residential Care Facilities for the Elderly Authority, Refunding RB, Canterbury Court Project, Series A, 6.13%, 2/15/26		2,000		2,043,220
Metropolitan Atlanta Rapid Transit Authority, RB, Sales Tax, Third Indenture Series A, 5.00%, 7/01/39		3,465		3,869,643
Municipal Electric Authority of Georgia, RB, Series W:
6.60%, 1/01/18 (d)(e)		380		400,888
6.60%, 1/01/18		5,520		6,170,201
Municipal Electric Authority of Georgia, Refunding RB, Series X, 6.50%, 1/01/20		1,205		1,425,913
				14,053,677
Hawaii — 0.5%
State of Hawaii, RB, Series A, 5.25%, 7/01/30		1,355		1,587,125
Illinois — 17.5%
Chicago Board of Education Illinois, GO, Refunding, Series A, 5.50%, 12/01/39		2,110		2,459,880
City of Chicago Illinois, GO, Public Improvement Project, Series A, 5.00%, 1/01/34		4,535		5,076,570

Municipal Bonds	Par (000)		Value
Illinois (continued)
City of Chicago Illinois, RB, O’Hare International Airport, General, Third Lien, Series C (AGM), 6.50%, 1/01/41	$	5,865	$	7,200,343
City of Chicago Illinois, Refunding RB:
Sales Tax, Series A, 5.25%, 1/01/38		820		941,344
Waterworks Revenue, 5.00%, 11/01/42		2,865		3,261,430
City of Chicago Illinois, Special Assessment Bonds, Lake Shore East, 6.75%, 12/01/32		800		829,784
City of Chicago Illinois, Tax Allocation Bonds, Kingsbury Redevelopment Project, Series A, 6.57%, 2/15/13		300		300,267
City of Chicago Transit Authority, RB, Sales Tax Receipts Revenue, 5.25%, 12/01/40		1,050		1,197,871
Illinois Finance Authority, RB:
Advocate Health Care Network, Series D, 6.50%, 11/01/38		5,000		5,893,550
Community Rehabilitation Providers Facilities, Series A, 6.50%, 7/01/22		470		431,949
Navistar International, Recovery Zone, 6.50%, 10/15/40		910		940,831
Illinois Finance Authority, Refunding RB:
Ascension Health, Series A, 5.00%, 11/15/37		970		1,080,415
Ascension Health, Series A, 5.00%, 11/15/42		1,765		1,954,120
Central DuPage Health, Series B, 5.50%, 11/01/39		1,610		1,812,329
Metropolitan Pier & Exposition Authority, Refunding RB, McCormick Place Expansion Project (AGM):
Series B, 5.00%, 6/15/50		3,150		3,408,300
Series B-2, 5.00%, 6/15/50		2,500		2,704,125
Railsplitter Tobacco Settlement Authority, RB:
5.50%, 6/01/23		1,335		1,557,838
6.00%, 6/01/28		1,140		1,326,629
Regional Transportation Authority, RB:
Series A, (AMBAC), 7.20%, 11/01/20		1,260		1,524,134
Series A, (NPFGC), 6.70%, 11/01/21		7,000		8,439,060
Series C, (NPFGC), 7.75%, 6/01/20		2,500		3,119,700
State of Illinois, RB, Build Illinois, Series B, 5.25%, 6/15/34		630		715,743
Village of Hodgkins Illinois, RB, MBM Project, AMT, 6.00%, 11/01/23		2,800		2,803,752



Schedule of Investments (continued)	BlackRock MuniVest Fund II, Inc. (MVT)
Schedule of Investments (continued)	(Percentages shown are based on Net Assets)



Municipal Bonds Transferred to Tender Option Bond (TOB) Trusts (f)
Arizona — 0.8%
Salt River Project Agricultural Improvement & Power District, RB, Series A, 5.00%, 1/01/38	2,450	2,722,787
California — 8.1%
Bay Area Toll Authority, Refunding RB, San Francisco Bay Area, Series F-1, 5.63%, 4/01/44	3,271	3,785,607
California Educational Facilities Authority, RB, University of Southern California, Series B, 5.25%, 10/01/39	2,610	3,055,135
City of Los Angeles California Department of Airports, Refunding RB, Senior, Los Angeles International Airport, Series A, 5.00%, 5/15/40	5,939	6,666,628
Los Angeles Community College District California, GO, Election of 2001, Series A (AGM), 5.00%, 8/01/32	2,290	2,581,609
San Diego Community College District California, GO, Election of 2002, 5.25%, 8/01/33	1,077	1,262,939
San Francisco City & County Public Utilities Commission, RB, Series B, 5.00%, 11/01/39	9,480	10,660,734
		28,012,652
Colorado — 0.7%
Colorado Health Facilities Authority, Refunding RB, Series A, 5.50%, 7/01/34	2,129	2,434,024
Connecticut — 2.0%
Connecticut State Health & Educational Facility Authority, RB, Yale University, Series Z-3, 5.05%, 7/01/42	6,000	6,904,380
Florida — 1.9%
County of Miami-Dade Florida, RB, Water & Sewer System, 5.00%, 10/01/34	5,679	6,391,142


*	As of July 31, 2012, gross unrealized appreciation and gross unrealized depreciation based on cost for federal income tax purposes were as follows:


Tax cost	$	419,501,046

Gross unrealized appreciation	$	65,111,830
Gross unrealized depreciation		(3,651,013	)
Net unrealized appreciation	$	61,460,817


(a)	Represents a zero-coupon bond. Rate shown reflects the current yield as of report date.

(b)	Issuer filed for bankruptcy and/or is in default of principal and/or interest payments.

(c)	Non-income producing security.

(d)	Security is collateralized by Municipal or US Treasury obligations.

(e)	US government securities, held in escrow, are used to pay interest on this security, as well as to retire the bond in full at the date indicated, typically at a premium to par.

(f)	Security represents a beneficial interest in a trust. The collateral deposited into the trust is federally tax-exempt revenue bonds issued by various state or local governments, or their respective agencies or authorities. The security is subject to remarketing prior to its stated maturity.

(g)	Investments in companies considered to be an affiliate of the Fund during the period, for purposes of Section 2(a)(3) of the Investment Company Act of 1940, as amended, were as follows:


Affiliate	Shares Held at April 30, 2012	Net Activity	Shares Held at July 31, 2012	Income
FFI Institutional Tax-Exempt Fund	40,158	(18,956)	21,202	$ 7


(h)	Represents the current yield as of report date.

(i)	Variable rate security. Rate shown is as of report date and maturity shown is the date the principal owed can be recovered through demand.


AGC	Assured Guaranty Corp.
AGM	Assured Guaranty Municipal Corp.
AMBAC	American Municipal Bond Assurance Corp.
AMT	Alternative Minimum Tax (subject to)
CAB	Capital Appreciation Bonds
EDA	Economic Development Authority
EDC	Economic Development Corp.
ERB	Education Revenue Bonds
Ginnie Mae	Government National Mortgage Association
GO	General Obligation Bonds
HFA	Housing Finance Agency
HRB	Housing Revenue Bonds
IDA	Industrial Development Authority
LOC	Letter of Credit
MRB	Mortgage Revenue Bonds
NPFGC	National Public Finance Guarantee Corp.
Radian	Radian Financial Guaranty
RB	Revenue Bonds
SBPA	Stand-by Bond Purchase Agreements
S/F	Single-Family
VRDN	Variable Rate Demand Notes


•	Fair Value Measurements - Various inputs are used in determining the fair value of investments. These inputs to valuation techniques are categorized into a disclosure hierarchy consisting of three broad levels for financial reporting purposes as follows:

	•	Level 1 — unadjusted price quotations in active markets/exchanges for identical assets and liabilities

	•	Level 2 — other observable inputs (including, but not limited to: quoted prices for similar assets or liabilities in markets that are active, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the assets or liabilities (such as interest rates, yield curves, volatilities, prepayment speeds, loss severities, credit risks and default rates) or other market-corroborated inputs)

	•	Level 3 — unobservable inputs based on the best information available in the circumstances, to the extent observable inputs are not available (including the Fund’s own assumptions used in determining the fair value of investments)



Schedule of Investments (concluded)	BlackRock MuniVest Fund II, Inc. (MVT)


	Level 1		Level 2		Level 3		Total
Assets:
Investments
Long-Term Investments¹		—	$	573,701,237		—	$	573,701,237
Short-Term Securities	$	21,202		5,100,000		—		5,121,202
Total	$	21,202	$	578,801,237		—	$	578,822,439



BLACKROCK MUNIVEST FUND II, INC.	JULY 31, 2012	1



BLACKROCK MUNIVEST FUND II, INC.	JULY 31, 2012	2


Municipal Bonds	Par (000)		Value
Maryland — 1.5%
County of Montgomery Maryland, GO, West Germantown Development District, Senior Series A (Radian), 6.70%, 7/01/27	$	1,130	$	1,155,707
Maryland Community Development Administration, Refunding RB, Residential, Series D, AMT, 4.90%, 9/01/42		1,500		1,543,935
Maryland EDC, RB, Transportation Facilities Project, Series A, 5.75%, 6/01/35		435		474,281
Maryland EDC, Refunding RB, CNX Marine Terminals, Inc., 5.75%, 9/01/25		830		898,450
Maryland Health & Higher Educational Facilities Authority, RB, University Of Maryland Medical System, Series B (NPFGC), 7.00%, 7/01/22		955		1,179,750
				5,252,123
Massachusetts — 2.9%
Massachusetts Health & Educational Facilities Authority, Refunding RB, Partners Healthcare, Series J1, 5.00%, 7/01/39		1,805		1,967,685
Massachusetts HFA, RB, AMT:
S/F, Series 130, 5.00%, 12/01/32		2,720		2,824,883
Series A, 5.20%, 12/01/37		2,830		2,931,172
Massachusetts HFA, Refunding HRB, Series F, AMT, 5.70%, 6/01/40		2,105		2,261,907
				9,985,647
Michigan — 6.6%
City of Detroit Michigan, RB:
Senior Lien, Series B (AGM), 7.50%, 7/01/33		910		1,143,961
Water Supply System, Senior Lien, Series A, 5.25%, 7/01/41		3,075		3,226,597
Kalamazoo Hospital Finance Authority, Refunding RB, Bronson Methodist Hospital, 5.50%, 5/15/36		1,380		1,531,897
Michigan State Hospital Finance Authority, Refunding RB, Series A:
Henry Ford Health System, 5.25%, 11/15/46		5,080		5,355,946
McLaren Health Care, 5.75%, 5/15/38		8,560		9,575,130
Royal Oak Hospital Finance Authority Michigan, Refunding RB, William Beaumont Hospital, 8.25%, 9/01/39		1,400		1,805,874
				22,639,405



BLACKROCK MUNIVEST FUND II, INC.	JULY 31, 2012	3


¹	See above Schedule of Investments for values in each state or political subdivision.