Since his first appearance on stage with the drama club at the World Junior College of Journalism, Li has performed with the Chen-shan-mei Social Theater, Lan Ling Theater and also in television variety show sketches.
從民國六十三年參加世新話劇社站上舞台以後，李國修先後參加了真善美社會劇團、蘭陵劇坊、以及電視綜藝節目的短劇演出。