Abstract: Aiming at the intelligent test system of the key parts of the amphibious vehicle, the intelligent control embedded software of the system is developed. Based on the TC1766 32-bit MCU platform, a set of private communication protocol based on can bus（Controller Area Network） standard is designed; The Interactive software based on can bus for data reading and control of the display screen, the software based on I~2C bus（Inter-Integrated Circuit Bus） of PCAL6416 for driving and reading the 16-channel switching value, and the software based on can bus for reading and controlling the display screen. The Software for reading analog signals from 7-channel A/D standard circuit, the software for driving the solenoid valve with 13-channel digital signals, the software for driving the high side of VND5 T100 AJ-E and the software based on TLE7242 current closed-loop control, in the time slice of MCU（Micro Control Unit）,combined with the control mode of display screen and the closed-loop control mode algorithm of each solenoid valve, the control of hydraulic proportional solenoid valve and on-off solenoid value of the whole test system is realized, and finally the intelligent test output of multi-component collaborative work under various working conditions of simulated amphibious vehicle is completed.And that functional verification is complete by matching the equipment.While meeting the test effectiveness, it provides a technical basis for improving the test efficiency of key components of amphibious vehicle, reducing the cost of verification and improving the test environment.