Aiming at the problems of low efficiency and low information level of Navy special vehicle data acquisition, a special vehicle state data acquisition system based on CAN bus is designed. The acquisition terminal is used to complete the data acquisition and storage functions. Through the vehicle CAN communication network, the monitoring platform is used to analyze the data collected by the terminal, so as to realize the real-time display function of the vehicle running state data. The system is connected to the CAN communication network of an armored vehicle for testing. The test results show that the system can carry out monitoring and making record of the vehicle running status information in real time, which has a certain reference value for the army information construction.