For the cup-shaped part with shallow hole，four kinds of extrusion processes were designed according to the theory of plastic forming, namely, the upper punch backward extrusion，the upper punch backward extrusion with floating die，the upper punch forward extrusion and the upper punch forward extrusion with floating die processes, and the forming qualities of cup-shaped parts and the wear conditions of each main punch under four kinds of extrusion forming processes were analyzed by software DEFORM to determine the forming process. In order to reduce the wear of main punch，the wear conditions of main punch under TiN，TiCN and TiN-TiCN coatings were studied respectively，and the reasonable coating material was determined. Furthermore, the influences of punch fillet radius，friction coefficient，stamping speed and coating thickness on the wear depth of punch surface were studied by orthogonal test method，and the optimum process parameters were determined. The results show that under the condition of ensuring the quality for parts，the wear value of main punch after single extrusion is smaller by adopting the process of upper punch forward extrusion with floating die，selecting TiN-TiCN composite coating as the coating material of punch, and choosing the process parameters such as the coating thickness of 4 μm，the friction coefficient of 0.08，the stamping speed of 10 mm·s-1 and the punch fillet radius of 6 mm.