Abstract: This paper, based on the CCU-YH-16 fighter aircraft,investigates the design philosophy and configuration of the.flight control system with maneuver enhancement and gust alleviation. Comparison between basic flight control system and maneuver enhancement/gust alleviation system is shown by simu lation results.The functions of maneuver enhancement/gust alleviation are examined and evaluated.Parameter optimization method is used using C* flight performance criterion as objective function.