Abstract: Spacecraft appendages maneuver with large angle, the whole system is a nonlinear, coupled one. For the appendage control loops, it is required that appendages maneuver to the anticipated position and stabilize as soon as possible. Based on feedback linearization nonlinear differentiation control method is presented in this paper. The dynamic performance of appendage loops is improved and the stability of the closed-loop system is proved. At last, the result of simulation shows that this method is effective.