In order to achieve a real-time monitoring of the suspension nodes of the maglev train, as well as tracking and adjusting the suspended current, voltage and vertical acceleration of the suspension system, a design has thus been proposed of a magnetic levitation controller debugging and monitoring system based on controller area network. In the process of Microsoft Visual Studio programming, the software of the system applies modular design along with the implementation of C# language. The CAN bus has been used as the transmission hub to realize communication between the upper and the lower computers, thus achieving the communication between the upper and lower computers. After a half-year vehicle running test，the debugging and monitoring system is characterized with normal communication and stable work performance, thus achieving the expected functional design requirements.