The utility model relates to an electric power overhaul device, and belongs to the technical field of electric power maintenance equipment. The device comprises a main ladder and an auxiliary ladder, wherein the main ladder is hinged with the top end of the auxiliary ladder; a working plate is connected with the top end of the main ladder through a hinge; a movable supporting frame is arranged on the auxiliary ladder; a limiting mechanism is arranged between the main ladder and the auxiliary ladder; expansion rods and fastening devices are arranged on legs of both the main ladder and the auxiliary ladder; the limiting mechanism adopts a square board connected with the main ladder and the auxiliary ladder; at least two clamping grooves are formed in the square board; fixing clamps corresponding to the clamping grooves are arranged on the main ladder. The electric power overhaul device has a simple structure, can help maintenance personnel to realize overhaul operation in open space, can flexibly adjust the height, has various functions, is convenient to use, and can be widely promoted and applied.