The invention discloses a high-voltage electric automatic discharge protection device, and the device comprises a power supply and an insulating plate. The device is characterized in that the power supply is connected with an AC traction electromagnetic controller; the AC traction electromagnetic controller is connected with one end of a linkage lever, and the other end of the linkage lever is movably connected with one end of a second linkage lever; the lower part of the first linkage lever is provided with a linkage lever support; one end of the linkage lever support is connected with a grounding electrode, and the other end of the linkage lever support is movably connected with the second linkage lever; the AC traction electromagnetic controller and the linkage lever support are fixed on the insulating plate; the insulating plate is fixed on a wall body. The beneficial effects of the invention are that the device automatically connects a ground wire to a high-voltage part after testing, and discharges the remaining charges. The device is high in automation degree, is small in size, and is convenient to install. In the whole testing process, no worker is needed for installing and disassembling the grounding line, thereby saving time and labor, reducing the potential safety hazards, and improving the safety work efficiency.