Energy saving will be the inevitable trend of industrial development, according to the characteristics of large energy consumption in the working cycle of the injection molding machine, a new type of hydraulic system for injection molding machine is proposed. It was mainly focused on the energy saving transformation of the new type of injection molding machine for shoes and the development of (Computer Programmable Automation Controller) (CPAC) injection molding machine control system. This new type of injection molding machine was adopted of a direct drive electrohydraulic servo system, through the servo motor to dynamically adjust the speed of the quantitative pump and to realize pressure and flow both closed loop control, so as to achieve the purpose of energysaving. The control system was used of Human Man Interface (HMI) as the manmachine interface (MMI), Googol Graphic Unit Controller (GUC) series universal integrated controller as control core. Structured text (ST) language and ladder diagram (LD) of two languages are used to develop open modular control system for injection molding machine.