Abstract: This work studies on decouple control of the rolling aircraft. Considering the time-varying property of the couple system, a new decoupling method combining the series decoupling and fuzzy control was proposed. The series decoupling compensation net was employed to achieve approximately decoupling solution of open-loop system, and the structure of closed-loop system of parameter self-tuning fuzzy PID controller was designed. Simulation and result analysis show that this method can effectively eliminate the steady coupling of the longitudinal and lateral channels of rolling aircraft, and can achieve good dynamic performance when the flight status is changed.