UNITED STATES

SECURITIES AND EXCHANGE COMMISSION 

Washington, D.C. 20549

FORM N-Q 

QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED MANAGEMENT 

INVESTMENT COMPANY 

Investment Company Act file number 811-4429 

Dreyfus U.S. Treasury Long Term Fund 

(Exact name of Registrant as specified in charter) 

c/o The Dreyfus Corporation 

200 Park Avenue 

New York, New York 10166 

(Address of principal executive offices) (Zip code) 

Mark N. Jacobs, Esq. 

200 Park Avenue 

New York, New York 10166 

(Name and address of agent for service) 

Registrant's telephone number, including area code: (212) 922-6000 

Date of fiscal year end:	12/31
Date of reporting period:	3/31/06

FORM N-Q

Item 1. Schedule of Investments.

STATEMENT OF INVESTMENTS
Dreyfus U.S. Treasury Long Term Fund
March 31, 2006 (Unaudited)

	Coupon	Maturity	Principal
Bonds and Notes--98.7%	Rate (%)	Date	Amount ($)	Value ($)
U.S. Government Agencies--1.9%
Federal National Mortgage
Association, Notes	5.80	2/9/26	1,600,000	1,569,016
U.S. Government Agencies/Mortgage-Backed--6.8%
Government National Mortgage Association I:
Ser. 2006-6, Cl. A, 4.05%,
10/16/23			274,230	265,693
Ser. 2006-9, Cl. A, 4.20%,
8/16/25			550,000	531,105
Ser. 2006-5, Cl. A, 4.24%,
7/16/29			1,946,476	1,883,011
Small Business Administration,
Ser. 2005-P10A, Cl. AN,
4.64%, 2/10/15			2,878,694	2,753,274
				5,433,083
U.S. Treasury Bonds--67.7%
4.50%, 2/15/36			4,020,000	3,773,148
5.25%, 11/15/28			10,590,000	10,877,095
5.25%, 2/15/29			7,565,000	7,770,087
6.00%, 2/15/26			1,500,000	1,674,135
6.13%, 11/15/27			3,500,000	3,985,625
7.13%, 2/15/23			1,650,000	2,029,747
7.25%, 8/15/22			3,500,000	4,341,365
7.63%, 2/15/25			10,175,000	13,302,999
8.00%, 11/15/21			5,175,000	6,799,432
				54,553,633
U.S. Treasury Notes--22.3%
3.50%, 2/15/10			400,000 a	381,438
4.25%, 8/15/13			8,770,000 a	8,437,705
4.50%, 2/15/16			2,510,000	2,441,956
4.75%, 3/31/11			1,900,000	1,895,252
4.75%, 5/15/14			4,825,000 a	4,784,277
				17,940,628
Total Bonds and Notes
(cost $81,565,900)				79,496,360

		Face Amount
		Covered by
Options--.0%		Contracts ($)	Value ($)
Call Options
U.S. Treasury Notes, 4.5%,
	2/15/2016 May 2006 @
	99.53125	4,140,000	3,234
U.S. Treasuy Notes, 4.5%,
	11/15/2015 April 2006 @
	101.296875	4,075,000	1
Total Options
	(cost $73,134)		3,235
Other Investment--2.9%		Shares	Value ($)
Registered Investment Company;
Dreyfus Institutional Preferred
	Plus Money Market Fund
	(cost $2,294,000)	2,294,000 b	2,294,000
		Principal
Short-Term Investments--8.2%		Amount ($)	Value ($)
U.S. Government Agencies--.1%
Federal National Mortgage
	Association 4.64%, 6/7/06	100,000 c	99,135
U.S. Treasury Bills--8.1%
	4.4%, 4/13/06	4,000,000	3,995,000
	4.59%, 4/27/06	2,515,000	2,507,455
			6,502,455
Total Short-Term Investments
	(cost $6,599,915)		6,601,590
Investment of Cash Collateral for
Securities Loaned--17.4%		Shares	Value ($)
Registered Investment Company;
Dreyfus Institutional Cash
	Advantage Plus Fund
	(cost $14,022,225)	14,022,225 b	14,022,225
Total Investments (cost $104,555,174)		127.2%	102,417,410
Liabilities, Less Cash and Receivables		(27.2%)	(21,930,119)
Net Assets		100.0%	80,487,291
a	All or a portion of these securities are on loan. At March 31, 2006, the total market value of the fund's
	securities on loan is $13,603,420 and the total market value of the collateral held by the fund is $14,022,225.
b	Investments in affiliated money market mutual fund.
c	Partially held by a broker as collateral for open financial futures positions.

Securities valuation policies and other investment related disclosures are hereby incorporated by reference to the annual and semi 

annual reports previously filed with the Securities and Exchange Commission on Form N-CSR. 

Dreyfus U.S. Treasury Long Term Fund
STATEMENT OF FINANCIAL FUTURES
March 31,2006 (Unaudited)

				Unrealized
		Market Value		Appreciation/
		Covered by		(Depreciation)
	Contracts	Contracts ($)	Expiration	at 3/31/2006 ($)
Financial Futures Long
U.S. Treasury 10 Year Notes	123	13,086,047	June 2006	(149,906)
U.S. Treasury 30 Year Bonds	41	4,475,406	June 2006	(151,828)
Financial Futures Short
U.S. Treasury 2 Year Notes	188	38,325,563	June 2006	73,437
U.S. Treasury 5 Year Notes	36	3,759,750	June 2006	23,625

Dreyfus U.S. Treasury Long Term Fund
Statement of Options Written
March 31, 2006 (Unaudited)

	Face Amount
	Covered by
Issuer	Contracts ($)	Value($)
Call Options:
U.S. Treasury Notes, 4.5%, 11/15/2015
April 2006 @ 102.585	8,150,000	1
U.S. Treasury Notes, 4.5%, 2/15/2016
May 2006 @ 100.742	8,280,000	2,587
(Premiums received $73,134)		2,588

Item 2. Controls and Procedures.

(a) The Registrant's principal executive and principal financial officers have concluded, based on their evaluation of the Registrant's disclosure controls and procedures as of a date within 90 days of the filing date of this report, that the Registrant's disclosure controls and procedures are reasonably designed to ensure that information required to be disclosed by the Registrant on Form N-Q is recorded, processed, summarized and reported within the required time periods and that information required to be disclosed by the Registrant in the reports that it files or submits on Form N-Q is accumulated and communicated to the Registrant's management, including its principal executive and principal financial officers, as appropriate to allow timely decisions regarding required disclosure.

(b) There were no changes to the Registrant's internal control over financial reporting that occurred during the Registrant's most recently ended fiscal quarter that have materially affected, or are reasonably likely to materially affect, the Registrant's internal control over financial reporting.

Item 3. Exhibits.

(a) Certifications of principal executive and principal financial officers as required by Rule 30a-2(a) under the Investment Company Act of 1940.

SIGNATURES

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.

Dreyfus U.S. Treasury Long Term Fund

By:	/s/Stephen E. Canter
	Stephen E. Canter
	President
Date:	May 23, 2006
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/Stephen E. Canter
	Stephen E. Canter
	Chief Executive Officer
Date:	May 23, 2006
By:	/s/James Windels
	James Windels
	Chief Financial Officer
Date:	May 23, 2006
EXHIBIT INDEX
	(a) Certifications of principal executive and principal financial officers as required by Rule 30a-
	2(a) under the Investment Company Act of 1940. (EX-99.CERT)