Conventional techniques make a mold with a cooling runner, which is usually straight, with slow and uneven cooling. Metallic 3D printing can be used to manufacture cascade cooling channel molds with complicated structure. Compared with traditional molds, the cascade cooling channel molds can achieve fast and uniform cooling while the mold stripping is faster and the effect is better. In addition, the metal 3D printing die with vent products to solve the traditional manufacturing technology can not be difficult. The application of metal 3D printing technology makes the design of mold products become free and open, leading the production of mold products to be customized and complicated. Ultimately, to promote the development of the entire mold industry.