Due to the development and application of new materials and the upcoming 5G network, the requirements for mobile phone casings are getting higher and higher. The mobile phone shell has developed from the initial plastic parts and metal parts to ceramic materials and graphene compliant materials, and the processing method has also changed from the initial injection molding and mechanical processing to one-time high-pressure forming. One-step molding ensures the consistency of product parts and reduces processing procedures. By changing the mold, mass production can be quickly formed, the processing cost is reduced, and new requirements are put forward for the high-pressure molding machine.