UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON D.C. 20549

                                    FORM 13F

                               FORM 13F COVER PAGE

Report for the Calendar Year or Quarter Ended: DECEMBER 31, 2003

Check here if Amendment |_|; Amendment Number:

This Amendment (Check only one.): |_| is a restatement.
                                  |_| adds new holdings entries.

Institutional Investment Manager Filing this Report:

Name:    ALLSTATE LIFE INSURANCE COMPANY
Address: 3075 SANDERS ROAD, SUITE G4A
         NORTHBROOK, IL. 60062-7127

13F File Number: 28-01037

The institutional investment manager filing this report and the person by whom
it is signed hereby represent that the person signing the report is authorized
to submit it, that all information contained herein is true, correct and
complete, and that it is understood that all required items, statements,
schedules, lists, and tables, are considered integral parts of this submission.

Person Signing this Report on Behalf of Reporting Manager:

Name:    DOUG WELCH
Title:   ASSISTANT VICE PRESIDENT INVESTMENT OPERATIONS
Phone:   847-402-2170

Signature,                               Place,             and Date of Signing:


      /s/  Doug Welch                     NORTHBROOK, IL.         2/10/2004
- -----------------------------------      ----------------   --------------------

Report Type (Check only one.):
|X|  13F HOLDINGS REPORT.
|_|  13F NOTICE.
|_|  13F COMBINATION REPORT.

List of Other Managers Reporting for this Manager:

FORM 13F SUMMARY PAGE Report Summary: Number of Other Included Managers: ONE Form 13F Information Table Entry Total: 72 Form 13F Information Table Value Total: 269,453 (THOUSAND) List of Other Included Managers: No. Form 13F File Number Name 1 028-10298 ALLSTATE INVESTMENTS LLC

FORM 13F INFORMATION TABLE TITLE OF VALUE SHARES/ SH/ PUT/ INVSTMT OTHER VOTING AUTHORITY NAME OF ISSUER CLASS CUSIP (x$1000) PRN AMT PRN CALL DSCRETN MANAGERS SOLE SHARED NONE - ----------------------------- -------- --------- -------- ------- --- ---- ------- -------- ---- ------ ---- COBANK,ACB SER A CUMULATIVE PREF STK REDEEM P/S 19075Q201 19,320 350,000 SH DEFINED 1 X COUNTRYWIDE FINANCIAL GROUP COMMON STOCK 222372104 2,023 26,667 SH DEFINED 1 X ELECTRONIC DATA SYSTEMS CORP. COMMON STOCK 285661104 1,288 52,500 SH DEFINED 1 X JOHNSON & JOHNSON COMMON STOCK 478160104 2,221 43,000 SH DEFINED 1 X NEW VALLEY CORP. WARRANTS WARRANTS 649080116 1 16,800 SH DEFINED 1 X AFFILIATED COMPUTER SVCS INC DEBT 008190AF7 3,163 2,500,000 PRN DEFINED 1 X AFFILIATED MANAGERS DEBT 008252AC2 975 1,000,000 PRN DEFINED 1 X ALZA CORP. DEBT 02261WAB5 2,967 4,100,000 PRN DEFINED 1 X AMERICA ONLINE DEBT 02364JAC8 5,887 9,400,000 PRN DEFINED 1 X AMERICAN INTERNATIONAL GROUP DEBT 026874AN7 3,290 3,500,000 PRN DEFINED 1 X AMERICAN INTL GROUP DEBT 026874AP2 4,877 7,375,000 PRN DEFINED 1 X AMGEN INC DEBT 031162AE0 1,997 2,650,000 PRN DEFINED 1 X AON CORP DEBT 037389AT0 371 300,000 PRN DEFINED 1 X APOGENT TECHNOLOGIES INC DEBT 03760AAE1 2,362 2,350,000 PRN DEFINED 1 X ARROW ELECTRONIC DEBT 042735AY6 3,640 7,000,000 PRN DEFINED 1 X BEST BUY DEBT 086516AD3 4,395 5,850,000 PRN DEFINED 1 X BJ SERVICES CO DEBT 055482AF0 3,684 4,500,000 PRN DEFINED 1 X BRINKER INTERNATIONAL DEBT 109641AC4 1,348 2,000,000 PRN DEFINED 1 X CARNIVAL CORP DEBT 143658AN2 2,705 2,300,000 PRN DEFINED 1 X CARNIVAL CORP DEBT 143658AS1 3,184 4,500,000 PRN DEFINED 1 X CENDANT CORP DEBT 151313AN3 9,828 9,100,000 PRN DEFINED 1 X CENDANT CORP DEBT 151313AF0 1,875 2,500,000 PRN DEFINED 1 X CENTURYTEL INC DEBT 156700AH9 1,138 1,000,000 PRN DEFINED 1 X CHIRON CORP DEBT 170040AE9 2,032 3,400,000 PRN DEFINED 1 X COMPUTER ASSOCIATES INC DEBT 204912AQ2 2,678 1,750,000 PRN DEFINED 1 X COMPUTER ASSOCIATES INC DEBT 204912AR0 8,966 6,950,000 PRN DEFINED 1 X COSTCO DEBT 22160QAC6 4,231 5,000,000 PRN DEFINED 1 X DEVON ENERGY CORP DEBT 25179MAA1 6,638 6,500,000 PRN DEFINED 1 X DEVON ENERGY CORP. DEBT 25179MAB9 2,043 2,000,000 PRN DEFINED 1 X DIAMOND OFFSHORE DRILL DEBT 25271CAE2 3,431 3,750,000 PRN DEFINED 1 X DOMINION RESOURCES INC DEBT 25746UAP4 1,513 1,500,000 PRN DEFINED 1 X DUKE ENERGY CORP DEBT 264399EJ1 8,208 7,950,000 PRN DEFINED 1 X FIRST DATA DEBT 319963AD6 4,168 3,850,000 PRN DEFINED 1 X GATX CORP DEBT 361448AC7 583 500,000 PRN DEFINED 1 X GENERAL MILLS INC DEBT 370334AU8 1,050 1,500,000 PRN DEFINED 1 X HARRIS CORP DEBT 413875AH8 445 400,000 PRN DEFINED 1 X HEWLETT PACKARD CO CONV DEBT 428236AC7 2,794 5,000,000 PRN DEFINED 1 X HORACE MANN EDUCATORS DEBT 440327AG9 2,583 5,600,000 PRN DEFINED 1 X INCO LTD. DEBT 453258AM7 5,419 5,000,000 PRN DEFINED 1 X INTL GAME TECHNOLOGY DEBT 459902AL6 1,593 2,000,000 PRN DEFINED 1 X INTL PAPER CO DEBT 460146BM4 6,832 12,450,000 PRN DEFINED 1 X IVAX CORP DEBT 465823AD4 4,145 4,000,000 PRN DEFINED 1 X IVAX CORP DEBT 465823AG7 1,515 1,500,000 PRN DEFINED 1 X JONES APPAREL DEBT 480081AD0 6,685 12,100,000 PRN DEFINED 1 X KERR-MCGEE DEBT 492386AP2 4,910 4,660,000 PRN DEFINED 1 X LABORATORY CORP OF AMER DEBT 50540RAC6 2,134 3,000,000 PRN DEFINED 1 X LEGG MASON INC DEBT 524901AG0 1,270 2,000,000 PRN DEFINED 1 X LEHMAN BROTHERS HOLDINGS DEBT 524908JJ0 5,056 5,000,000 PRN DEFINED 1 X LIBERTY MEDIA DEBT 530715AR2 3,708 3,565,000 PRN DEFINED 1 X LIBERTY MEDIA / AT&T CORP DEBT 530715AG6 2,980 4,250,000 PRN DEFINED 1 X LIBERTY MEDIA CORP DEBT 530715AN1 838 1,000,000 PRN DEFINED 1 X LOWES COMPANIES DEBT 548661CF2 4,118 4,500,000 PRN DEFINED 1 X LOWE'S COMPANIES INC DEBT 548661CG0 3,188 3,000,000 PRN DEFINED 1 X MASCO CORP DEBT 574599AW6 6,600 15,000,000 PRN DEFINED 1 X MEDTRONIC INC DEBT 585055AB2 11,568 11,300,000 PRN DEFINED 1 X MERRILL LYNCH & CO DEBT 590188A73 3,919 3,800,000 PRN DEFINED 1 X MORGAN STANLEY DEBT 617446GR4 2,272 2,500,000 PRN DEFINED 1 X

TITLE OF VALUE SHARES/ SH/ PUT/ INVSTMT OTHER VOTING AUTHORITY NAME OF ISSUER CLASS CUSIP (x$1000) PRN AMT PRN CALL DSCRETN MANAGERS SOLE SHARED NONE - ----------------------------- -------- --------- -------- ------- --- ---- ------- -------- ---- ------ ---- ODYSSEY RE HOLDINGS DEBT 67612WAB4 2,358 2,000,000 PRN DEFINED 1 X OMNICOM GROUP INC DEBT 681919AM8 3,060 3,000,000 PRN DEFINED 1 X PMI GROUP INC DEBT 69344MAE1 4,310 3,950,000 PRN DEFINED 1 X QUEST DIAGNOSTIC INC DEBT 74834LAF7 4,362 4,250,000 PRN DEFINED 1 X RADIAN GROUP INC DEBT 750236AF8 1,568 1,500,000 PRN DEFINED 1 X STMICROELECTRONICS NV DEBT 861012AB8 1,818 2,000,000 PRN DEFINED 1 X TJX COMPANIES DEBT 872540AL3 1,675 2,000,000 PRN DEFINED 1 X TRANSOCEAN SEDCO FOREX DEBT 893830AD1 3,949 4,050,000 PRN DEFINED 1 X UNIV HEALTH SVCS DEBT 913903AL4 5,072 7,700,000 PRN DEFINED 1 X VERIZON GLOBAL FDG CORP DEBT 92344GAN6 2,174 3,600,000 PRN DEFINED 1 X WALT DISNEY COMPANY DEBT 254687AU0 10,588 10,000,000 PRN DEFINED 1 X WEATHERFORD INT'L DEBT 947074AB6 4,146 6,700,000 PRN DEFINED 1 X WORLD COLOR PRESS, INC., CONVERTIBLE DEBT 981443AA2 1,039 1,000,000 PRN DEFINED 1 X XL CAPITAL LTD DEBT 98372PAB4 8,176 12,800,000 PRN DEFINED 1 X YOUNG & RUBICAM DEBT 987425AC9 2,506 2,500,000 PRN DEFINED 1 X PRN DEFINED 1 X - -------------------------------------------------------------------------------- "STOCK" 5 24,853 488,967 - -------------------------------------------------------------------------------- DEBT 67 244,600 295,250,000 - -------------------------------------------------------------------------------- REPORT TOTALS 72 269,453 295,738,967 - --------------------------------------------------------------------------------