Abstract: Electric motor is one of the important components of new energy vehicles, and the processing quality of stator directly affects the quality of motor, which in turn affects the performance of new energy vehicles. In this article, taking the high silicon steel material stator of new energy vehicle motors as the research object, a model is established in SolidWorks software, and the DEFORM-3D software is used to simulate the stator punching process. By changing the punching gap and punching speed, the changes in stator stress, strain, and material internal flow rate during the punching process are analyzed. Research has shown that as the punching gap increases, the maximum punching force gradually decreases, and there is a lag in fracture forming. As the punching speed increases, the height of burrs increases. The research results provide a basis for further optimizing the stator punching process and have certain guiding significance for the stator production and manufacturing.