Design is the key step in the production of molds, the initial step of production, and controls the whole process of mold production. Therefore, the design also has a great impact on the service life of the mold. The design mainly affects the service life of the stamping mold from the following two aspects. . (1) Precision of the guiding mechanism of the mold. Accurate and reliable guiding, to reduce the wear of the working parts of the mold, to avoid the impact of convex and concave molds, especially the gapless and small gap blanking die, composite die and multi-station progressive die are more effective. In order to improve the life of the mold, the design must be correctly selected according to the nature of the process and the accuracy of the parts, and the accuracy of the guiding mechanism must be determined. (2) Geometric parameters of the die (convex, concave die) edge. The shape of the convex and concave molds, the fit clearance and the fillet radius not only have a great influence on the forming of the stamping part, but also have a great influence on the wear and life of the mold. For example, the matching clearance of the mold directly affects the quality of the blank and the life of the mold. For higher precision requirements, a smaller gap value should be selected in the design; otherwise, the gap can be appropriately increased to improve the life of the mold.