Alfhild M. Michal, 69, a retired secretary who worked on Capitol Hill for many years, died of cancer Thursday at her home in Columbia, Md.

Mrs. Michal, who was born in Baltimore, was a secretary there for a food importing company and for the Westinghouse Company. In the 1940s, she moved to Washington and went to work for the Consulate of China.

In 1947, she became a secretary at the Republican National Committee. From 1948 to 1951, she worked for a company in Madison, Wis., and then returned here. She was a secretary for senator James P. Kem of Missouri until 1953. She then worked for two years for a firm in Indianapolis, Ind.

In 1955, Mrs. Michal returned to Capitol Hill and remained there until her retirement in 1974. Among the persons for whom she worked were senators Homer Capehart of Indiana and Roman Hruska of Nebraska. She was on the staff of senator Edward J. Gurney of Florida at the time of her retirement.

Mrs. Michal received a certificate of service from the Office of the Secretary of the Senate for her years of service.

Her marriage to Walter E. Michal ended in divorce.

She leaves no immediate survivors.