The invention discloses a distance calculation implementation method of shunting operation key points in a station track on the basis of BDS and STP. A current homemade mature Beidou navigation system(BDS) and a differential positioning technology are adopted, and the positions of a shunting locomotive, shunting team operation staff and a connecting-hanging point are calculated accurately; according to the trajectory characteristic of the STP system in shunting operation, the distance between the key protective point and the front end of a train set during movement in the shunting operation process is calculated, the accurate distance is provided for the STP system, and the train controlled limit speed is calculated and serves as a train controlled basis. Meanwhile, the position and operation condition information of the operation shunting team members in the field can be effectively grasped by direct viewing, vehicles of the station track in a station are evaluated, then marshallingparking capacity calculation is performed, and the truest station track parking capacity information is provided for the station scheduling.