Aiming at the problem of control surface redundancy in the transition phase of dual propeller propulsion compound helicopter， the control distribution coefficient between different control mechanisms and the optimal transition route are designed. The dynamic model of the compound helicopter is established， and the control strategy of the compound high-speed helicopter is proposed. The optimal power of the whole helicopter is taken as the optimization objective， and the continuous smooth transition of the control lever is taken as the boundary condition. The optimal transition route and the control distribution coefficient between different control mechanisms are obtained. The simulation results show that the optimized distribution coefficient can guarantee the smooth and continuous transition of the control lever in different channels of the compound helicopter， thus ensuring the pilot’s control performance.