Abstract: The basic performance and forming process of microwave laminates are briefly introduced in this paper.According to the demands of the ceramic powder filled PTFE laminates to press machine, a 350 t high temperature multilayer vacuum press machine is designed independently. The structure, working mode and control principle of the press machine are systematically expounded. The problems of low accuracy, small working range and low working pressure of existing machine are better solved. The quality and production efficiency of microwave laminates are improved effectively.