Abstract: To comprehensively evaluate the stability, reliability, and compatibility of the onboard communication radio in the wireless train dispatching (referred to as train dispatch) system, this paper designed a set of detection system of onboard communication radio, used technologies such as database analysis, log analysis, and communication data perception to solve the problem of difficult detection of onboard communication data in the interconnection and intercommunication of devices from different manufacturers. The pilot application of the system on Shanghai Metro Line 2 shows that it can effectively verify the feasibility of stability, reliability, and compatibility testing of onboard communication radios, and can be widely applied in the field of rail transit, provide technical support for the interconnection and intercommunication of onboard communication equipment.