Determining the main technical specifications of the four column hydraulic press is one of the most important steps in the design work. Because it is directly related to whether the designed machine can meet the quality and productivity requirements of the pressing of the parts. At the same time, it is also the basis for the design of parts. It has a great influence on the size of parts, the ability to require processing equipment and the cost of the whole machine. Therefore, must carefully analyze the hydraulic machine workpiece process procedure; a careful analysis of the use of mould dimensions and mounting requirements; careful analysis of each process action requirements of pressure, velocity, relative position between the working stroke and stroke stop point position accuracy requirements. When determining the main technical specifications, we should further investigate the structure, main specifications, operation performance and other related data of the same type of equipment, and we should give full attention to the requirements and improvement suggestions of user units.