The invention relates to an electric power overhaul tool, specifically to a windproof device for a high voltage test lead. The windproof device for the high voltage test lead includes a winder, the winder includes a housing, an end cover and a rotary core, an end face of the housing is connected with the end cover, a side face of the housing is provided with a lead mouth, a winding shaft stretches out from the center of the housing, and an edge of an inner wall of a bottom surface of the housing is provided with a limiting boss. The rotary core includes a substrate, a winding shaft hole is arranged in the position of the center of a circle of the substrate, center parts of a front side and a reverse side of the substrate are provided with a wiring cavity and a spring cavity respectively in an extending manner, a side face of the wiring cavity serves as a winding surface, a plurality of winding wings parallel to the substrate extend from an edge of the wiring cavity, a fracture is formed on a side face of the wiring cavity, a plurality of wiring terminals are arranged in the wiring cavity, the wiring terminals are connected with one end of the test lead, after stretching out from the fracture and winding along the winding surface, the other end of the test lead stretches out from the lead mouth of the housing, and the other end of the test lead is connected with a test clamp.