Abstract: In order to solve the problems of low intelligence of data monitoring and single debugging method for platformsafety gate equipment in rail transit, this article adopted modular design method to implement platform safety gate intelligentmonitoring system based on wireless communication. The article completed the overall system architecture design and themain function design of the system, and described in detail the key technologies of the system, such as "data acquisitionmodule design", "gate control unit (DCU) design", "wireless transmission module design". The principle and programmingof the core chip M20 of the wireless transmission module were studied and designed. The related work was verified by fulltest in the laboratory. The tester could monitor the system-level data, platform-level data and single-door data of the platformsafety gate system in real time and debug the single-gate quickly with a handheld wireless terminal. The test results showthat the system can implement wireless monitoring of the status of platform safety gate equipment, improve the efficiencyof metro operation and the flexibility of maintenance and protection of station staff, and ensure the safety and reliability ofplatform safety gate system.