The utility model relates to a 10kV insulation wire clamp, and especially relates to cutting wire clamp suitable for live-line working; the 10kV insulation wire clamp comprises a hook, a wire clamp and a screw rod; one end of the screw rod is connected with a hang ring, and the other end of the screw rod penetrates a hook pedestal and is fixedly connected with the wire clamp arranged in the hook; one side of the hook is provided with a press line screw nut; a middle portion of the wire clamp is provided with a first mounting hole and a second mounting hole; a blade extruding outside an upper surface of the wire clamp is arranged in the first mounting hole; a lower end of the blade is fixed on a push rod connected with a spring; the spring is arranged in the second mounting hole, a top end of the spring is clamped on a boss of the push rod, and a bottom end of the spring is clamped on a bottom of the second mounting hole of the wire clamp. Wiring operation of the insulation wire can be completed by using the 10kV insulation wire clamp without peeling off the wire; electric connection is excellent; the 10kV insulation wire clamp saves man power and material, and is convenient in usage.