In order to enhance the reliability of missile attitude control system an approach of active fault-tolerant control method for missile actuators based on fault compensation idea was proposed.The structure and function characteristics of cross-type rocket engine′s actuator was studied thoroughly and the failure modes and their effects were analyzed.Then an active fault-tolerant control scheme was proposed,and fault-tolerant control algorithms based on fault compensation idea for deadlock fault and constant deflection fault were derived.Simulation results show that the proposed approach is effective and overcomes the applicability limitation of traditional passive fault-tolerant control method.