The invention discloses a power lead peeling device. The power lead peeling device comprises a wire conveying device, a wire cutting device and a peeling device which are sequentially arranged from left to right, wherein the wire conveying device comprises a wire conveying support plate, a wire conveying motor mounting plate, a first isolation plate, a second isolation plate, a wire conveying driving motor, a first driving belt pulley, a first driven belt pulley, a first synchronous belt, a wire conveying motor, a second driving belt pulley, a second driven belt pulley, a second synchronous belt, a gear, a driving shaft, a driving roller, a fixed roller, a roller support seat, a vertical sliding chute seat, a sliding block, a lead screw nut seat and a side surface fixing plate. The power lead peeling device is designed for various cable varieties, adaptive processing of wire diameters is satisfied, automatic cutting of wire heads, wire middle parts and wire tails of cables is performed, cutting can be performed according to a fixed length, a copper core is effectively protected by twisting of a scissor hand through two vertical and horizontal peeling parts, unmanned assembly line production is achieved better, the power lead peeling device is high in reliability and thorough in peeling, and the yield of a product is improved.