The utility model provides an electrified plugging device of GIS equipment gas leakage, including sealing cap and shutoff base, be equipped with first cylinder on the shutoff base, the second cylinder, the round platform, first cylinder is located second cylindrical upper end, the round platform is located second cylindrical lower extreme, be equipped with first through -hole on the first cylinder, the inside gas collection cavity that is equipped with of second cylindrical, first through -hole communicates with each other with the gas collection cavity, be equipped with the toper through -hole on the round platform, the toper through -hole communicates with each other with the gas collection cavity, set up the external screw thread on the first cylinder, first cylinder and sealing cap threaded connection. Plugging device's lower extreme is equipped with the round platform, is equipped with the toper thru hole in the round platform, can tailor, beat the lower extreme of round platform according to the size of gas leakage point, can adjust to cover GIS equipment gas leakage point completely to shutoff base lower extreme round platform and extend. First cylinder and sealing cap threaded connection after fixing the shutoff base on GIS equipment gas leakage point, screw up sealing cap on the shutoff base to can reach GIS equipment carries out the leaking stoppage to gas leakage point under the circumstances about not having a power failure mesh.