The utility model provides an open -air high -tension apparatus uses quick earthing device, it includes punch holder, lower plate, presss from both sides tight adjusting part, locking Assembly, binding clip subassembly and inserts the ground subassembly, adopts between punch holder and the lower plate press from both sides tight adjusting part and realize distance and the regulation of clamp force between punch holder and the lower plate, still be provided with the locking Assembly who is used for locking punch holder and lower plate between punch holder and the lower plate, be connected with on punch holder or the lower plate binding clip subassembly, binding clip subassembly sub -unit connection insert ground the subassembly, the utility model discloses an adopt gear and rack to coordinate, can make things convenient for and accurate press from both sides punch holder and lower plate tight, realize with between connection of electric lines to punch holder and the lower plate that improved the reliability and the stability of wiring, constructor can connect the electric wire between punch holder and lower plate by according to actual need, also can select to press from both sides tightly in the binding clip subassembly, through rotatory application of force nut, can realize inserting fast tightly the contact pin.