The invention discloses an automatic tracking system and method of a suspension type vehicle in a vehicle depot position. The system comprises a vehicle-mounted speed sensor, a vehicle-mounted controller, a vehicle-mounted communication antenna, a vehicle-mounted beacon reader, a communication station, a plurality of passive beacons, a region controller, and a tracking server, wherein the passive beacons are arranged at intervals beside a rail. The vehicle-mounted speed sensor is used for calculating the travelling distance of the vehicle; the vehicle-mounted beacon reader is used for reading beacon serial numbers of the passive beacons; the vehicle-mounted controller is used for correcting the travelling data of the vehicle in real time; and the tracking server is used for calculating the real-time position of the vehicle according to the serial numbers and the travelling distance of the vehicle, which are emitted through the vehicle-mounted communication antenna by the vehicle-mounted controller in real time, the latest read beacon serial numbers of the passive beacon, and pre-set rail route data. Through the automatic tracking system disclosed by the invention, the position of the vehicle in the vehicle depot can be correctly and continuously tracked in real time, so that operating efficiency of the vehicle in the depot can be improved.