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The system of a certain type of engine consists of an integrated controller, sensors, a motor pump and solenoid valves, and the integrated controller device is the core of the whole system. To assess the performance of the integrated control device whether meets the requirements, simulation experiments were done based on all kinds of operating mode data of the sensors (mainly are pressure sensors). On one hand, using real pressure sensor to carry out the above work, it needs to build a complex working environment so that the workload is tremendous, and data precision is difficult to ensure. On the other hand, it is difficult to adjust the sensor signal in real time. Considering the above considerations, the paper presents a design of multi-channel pressure sensor simulation module based on VXI bus, which consists of 24 pressure sensor circuits that every single is an independent output. The module is based on VXI bus interface circuit and VXI bus functional circuit, and VXI bus interface circuit is mainly composed of CPLD and dual-port RAM with interpretation and decoding of VXI bus instruction; VXI bus functional circuit includes 96 series single chip microprocessor, DA output circuit and a dual-line pressure sensor circuit, completing real sensor output signal electrical characteristics simulation. The module driver compiling in Lab Windows/CVI6.0 environment is prepared for the user to carry out the procedure call and fast operation. The module has been applied in the VXI bus test system, and the practice shows that the module's output accuracy is high, the signal adjustment is easy to act, and the response is fast. It meets the requirements of the simulation deep test of the controller.