Abstract: In the reluctance-type coil electromagnetic launcher, the residual current of the drive coil will affect the launch efficiency of the projectile. The capacitor in the drive circuit of reluctance-type coil electromagnetic launcher is replaced by the bridge capacitor circuit, and the residual current of drive coil in launcher is rapidly reduced by bridge capacitor circuit to avoid reverse force when the projectile moves. This paper introduces the working principle of bridge drive circuit in reluctance-type coil electromagnetic launcher. The launch performance of reluctance-type coil electromagnetic launcher in traditional drive circuit and bridge drive circuit is analyzed by simulation and experiments. Simulation and experimental results show that the efficiency of the reluctance-type coil electromagnetic launcher is improved by using the bridge drive circuit. The energy recovery from the residual current to the capacitor reduces the system energy loss. The law of simulation and experimental results is consistent, indicating the feasibility of the bridge drive circuit in the reluctance-type coil electromagnetic launcher. The study provides a reference for solving the suppression of residual current and reverse force of drive coil.