Abstract: This paper proposed a dedicated wireless communication detection system based on LTE-M (Long Term Evolution for Metro) and TETRA (Terrestrial Trunked Radio) multi-standard integration, which addressed the issues of heavy maintenance workload, difficult fault diagnosis, and incompatible detection systems for urban rail transit train wireless dispatching communication system. The paper elaborated on the composition and architecture of the system, as well as the functions of road test data analysis, historical data tracing, fault diagnosis and localization in train wireless dispatching communication systems, adopted techniques such as multi-threaded processing to implement automatic collection signal field strength information for TETRA and LTE-M multi-standard train wireless dispatching communication systems. The experimental results show that the dedicated wireless communication detection system operates stably and provides better guarantee for the normal operation of the urban rail transit train wireless dispatching communication system.