The invention discloses an electric power maintenance ladder. The electric power maintenance ladder comprises a base, and a tower body which is arranged on the base; an upright post is arranged on one side of the tower body; brackets are arranged on the side, opposite to the upright post, of the tower body; at least three brackets are arranged in the height direction of the tower body at equal intervals; a supporting plate is arranged on each bracket; each supporting plate is rotatably connected with the corresponding bracket through a supporting block which is arranged above the corresponding bracket; a sleeve is arranged on the upright post in a sleeving manner; pedals are arranged on the sleeve; the sleeve can rotate relative to the upright post; adjacent pedals on the sleeve are connected with each other through a connecting rod; each supporting block is positioned at one end of the corresponding bracket; the supporting plates are strip-shaped. According to the electric power maintenance ladder, the pedals and the supporting plates are combined; when the pedals are rotated and are used for climbing the tower body, the supporting plates can be driven to be overlapped with the middle part of the tower body, so that a worker can place equipment or take a break when maintaining the equipment.