The utility model discloses an electronic earthing switch electrically -operated and manually operation blocking device, it follows in being fixed in on the right front curb plate of the cabinet body to decide the board, the leading flank of deciding the board has long chute from falling down to open, long chute's lower extreme is opened to have and is run through the operation round hole of deciding the board face, the dead astern of this operation round hole corresponds the position of ground sword handle hole, the leading flank upper portion of deciding the board is fixed with the clamp plate that spanes long chute, the electro -magnet is fixed on the mounting panel, the slide is located long chute and can follows long chute and slides from top to bottom, and the bottom surface of withstanding the slide is suddenly followed on the top of ground sword hyoplastron, open at the top of slide has the location round hole that runs through the face, when electro -magnet mistake electric lock pole pops out, the location round hole can be passed in the rear end of locking lever. The utility model has the characteristics of safe and reliable, simple structure, convenient operation, the interlocking is nimble.