Train track detection system, method and device and medium

The invention discloses a train track detection system, a train track detection method, a train track detection device and a medium. The train track detection system comprises a positioning module, a microwave sending module, a microwave acquisition module and an MCU. The microwave sending module radiates microwaves to the bottom of the train; the microwave acquisition module calculates the train rail state and the rail roadbed humidity and density according to the acquired ground echo reflection information and the frequency information sent by the MCU; and the MCU receives the calculation result sent by the microwave acquisition module and determines the train track state of the data acquisition point and the humidity and density of the track roadbed according to the coordinate of the data acquisition point. According to the technical scheme, the microwave sending module radiates microwaves to the bottom of a train, the microwave collecting module calculates the train rail state and the rail roadbed humidit