Distributed bearing test center monitoring and control system based on CAN bus is designed in this paper. It can monitor bearing test process, collect test data, analyze vibration signals, extract features of bearing failure and diagnose bearing faults. The system has been used in a bearing test and inspection center of a bearing plant successfully. Distributed bearing test center monitoring and control system based on CAN bus is designed in this paper. It can monitor bearing process test, collect test data, analyze vibration signals, extract features of bearing failure and diagnose bearing faults. The system has been used in a bearing test and inspection center of a bearing plant successfully.