Traditional ball head pin production gives priority to machining. There are shortcomings such as low utilization rate of material, low production efficiency and poor quality. The corresponding simulation of three cold extrusion processes was used in a certain automobile ball head pin, which was based on DEFORM-3D software platform. Then these simulated results were analyzed, like displacement field, velocity field, strain field, stress field, extrusion strokeextrusion pressure curve of the material and possible defects of the workpiece in the forming process. The results show that semifinished product is wellshaped, the distribution of deformation degree is balanced and the implement is strong after completion of each cold extrusion, and that the overall plan of workpiece cold extrusion forming process is advanced and reasonable, technical route is right, and process design is feasible, which are verified in theory.