The utility model provides a surpass, high altitude construction car automatic re -setting earthing device for the extra -high voltage transformer substation, it overhauls auxiliary assembly technicalfield to relate to electric power, through setting up fastener main part and earth connection automatic re -setting device, earth connection automatic re -setting device mainly includes the support,the wiring dish, earth connection and canceling release mechanical system, the one end and the fastener main part of earth connection are connected, the other end is around establishing on the wiringdish, wiring dish and rotate bracket connection, and reset through canceling release mechanical system, and be equipped with on the support and keep off the structure of meeting sb. At the airport, can realize reliably being connected earth connection and high altitude construction car, provide simultaneously and receive the line function automatically, the security is high, and is adjustable in aflexible way, low cost, and it is convenient to remove, and easy operation, application range extensively use easy operation, can use rapidly during the maintenance at super, extra -high voltage transformer substation primary equipment, maintain that the convenience is convenient, are fit for extensive the popularization.