Abstract: The transport environment of the auxiliary cage shaft pithead of the coal mine is complicated. At present, most of the mines are taking manual operation method. This method consumes a lot of manpower and material resources and has low transport efficiency. Moreover, it is difficult to ensure safety. Taking the auxiliary cage shaft pithead transport system of Huating Coal Mining Group Co., Ltd. as the research object, using the technologies of inertial measurement, PLC and electromagnet connection, this paper designs an automatic transport system in auxiliary shaft pithead. The composition of the system is introduced, and the solutions of the key technologies of the system are described, including electric locomotive positioning based on inertial measurement and RFID beacon, automatic coupling of electric locomotive and carriage based on electromagnet, automatic switching, and automatic rollover based on absolute encoder. The application results show that the system realizes the automatic control of the transport equipment of the auxiliary cage shaft pithead, improves the transport efficiency, reduces labor input, and realizes the transformation from human resource type to economic and technical type in old mines.