The utility model discloses a well high voltage electricity gold utensil, including base member, plane nut and two casing pressure claw subassemblies, each casing pressure claw subassembly includes three pressure claw, the base member is equipped with the slip pipe and sets up the spacing hole of radial guiding on the slip pipe, plane nut cover is established on the periphery wall of base member slip pipe to be located between the two casing pressure claw subassemblies, each presses the claw to be arranged in a corresponding spacing hole of radial guiding, plane nut both sides ends respectively is equipped with a plane thread portion, each plane thread portion then with the drive screw thread portion meshing adaptation that borders on three pressure claw in the casing pressure claw subassembly, the plane nut drives two casing pressure claw subassemblies in step and is close to each other or keeps away from towards the slip pipe center, still include the waterproof cover of elasticity, this elasticity prevents that water jacketed both ends all are equipped with cable penetrating hole, and base member, plane nut and pressure claw subassembly all are arranged in this elasticity and prevent water jacketed cavity, the packing had insulating grease during water jacketed cavity was prevented to elasticity. The utility model discloses has the better locking effect of moving.