For satisfying the development requirements of modern technology and war situation on artillery, and ensuring fast and correct projectile supplement, carry out the numeric simulation analysis for artillery projectile supplement mechanism. Taking certain type projectile supplement mechanism of artillery as the research object, based on the characteristics and load bearing characteristics of the projectile supplement mechanism and mechanical analysis, use finite element method to carry out numeric simulation for supplement mechanism in projectile supplement process. Adopt RecurDyn software to carry out dynamics simulation, and use ANSYS WOEKBENCH finite element software for statics analysis. The simulation results show that the device can rapidly supply artillery automatic shell magazine with projectile in ammunition supplement vehicle, meet the requirements of projectile supplement mechanism performance and provide bomb feeder design in artillery projectile supplement mechanism with technology reference.