The utility model discloses an outdoor power equipment box with high weather resistance. The outdoor power equipment box comprises a top cover, a box body and a base, The top cover is composed of an outer top and a heat insulation lining, an axial flow fan or a condensation dehumidifier is installed on the heat insulation lining, a horizontal edge is connected between the outer top and the edge ofthe heat insulation lining, an exhaust outlet is formed in the horizontal edge, and a vertical flange arranged downwards is arranged on the edge of the outer top. A waterproof assembly is arranged between the box body and the base and is of a square structure formed by splicing four long-strip-shaped rain sheltering pieces A and four square rain sheltering pieces B. The heat insulation box is simple in structure and ingenious in design, the problems of heat insulation and heat dissipation of the box body in hot summer are effectively solved, extreme weather such as rain, snow, hail and condensation is well protected, and therefore the weather resistance of the heat insulation box is greatly improved.