Incoming White House chief of staff Donald T. Regan is expected to announce the appointment of Craig L. Fuller as his deputy for the next few months, administration officials said yesterday.

Fuller is now assistant to the president for Cabinet affairs. The appointment is Regan's first as he swaps jobs with James A. Baker III, the new Treasury secretary.

Officials said Fuller will serve alongside the current deputy chief of staff, Michael K. Deaver, who has announced plans to leave the White House for a public relations job. Deaver recently has been recuperating from an illness.

Fuller is expected to remain a few months, after which Regan probably will name four or five deputies, officials said.

The officials also said Regan will announce shortly that Fuller's current job will be filled by Alfred H. Kingon, now assistant Treasury secretary for policy, planning and communications. Kingon is eventually expected to serve as a deputy to Regan for policy, the officials said.

The new chief of staff is also expected to name immediate assistants shortly. Officials said they will probably include David L. Chew, who served as his executive assistant at Treasury, and Christopher Hicks, who has also worked in Regan's Treasury office.