The Army has cleared Joseph M. Guiffre, Northern Virginia's largest beer distributor and a political protege of Gov. Charles S. Robb, of allegations that he tried to influence procurement officials at Fort Belvoir with improper gratuities.

Guiffre's lawyer, David G. Fiske, said yesterday Guiffre was informed in a letter last week that the service was calling off proposed debarment proceedings because of insufficient evidence.

The outcome of a separate investigation of Guiffre's business entertainment practices by federal Alcohol, Tobacco and Firearms agents and Virginia's Alcoholic Beverage Control Commission is pending, Fiske said.

Guiffre, an Anheuser-Busch distributor and a Robb appointee to the Virginia Highway and Transportation Commission, was notified in early July that the Army would consider barring him from selling beer to area military facilities for up to three years. Guiffre's company was dropped by Fort Belvoir in Fairfax, Cameron Station in Alexandria and the Marine Corps' Henderson Hall in Arlington pending the outcome of the investigation.

Fiske said yesterday those three facilities account for 20 percent of the business of the Guiffre Distributing Co. Inc. of Springfield.

Officials have said the Army investigation centered on a 1982 fishing trip at Ocean City, Md., hosted by Guiffre for Fort Belvoir officials and their wives on an Anheuser-Busch boat. Fiske said investigators also focused on a concert at the Capital Centre where an Army major allegedly was a guest of Guiffre.

Military personnel were admitted free to the concert, according to Fiske.