Inevitably, angle skew problems occur after communication jamming projectile falling onto the ground. Whether the body attitude is vertical or not will directly influence subsequent interference. Without angle correction may cause the whole system's malfunction. Concerning the problem of angle skew, a control system of automatic centralizer mechanism based on 51 MCU was developed. The work principle of communication jamming projectile was analyzed, the mechanical structure and control part of the system were designed. Through analyzing angle signal, control system driver stepping motor, the missile body is made to be automatically upright.