Abstract: In order to optimize the stamping process of sintered NdFeB,a powder mixing calculation model was established based on EDEM finite element analysis software. In the simulation,the material properties are defined,and the boundary conditions are loaded,solved and post-processed. The influence of mold fillet and draft angle on compressive stress was analyzed through simulation,providing a theoretical reference for improving the quality of green compacts and optimizing process parameters during the compaction of NdFeB magnetic powder. The simulation results show that the appropriate mold chamfering as far as possible to increase the mold demoulding slope can significantly reduce the compressive stress and equipment deterioration,so as to reduce the mold wear and improve the quality of the compact. However,the specific design parameters should be selected based on actual conditions.