The utility model discloses a cutting device for power cable, including box and cutter, body cavity's upper end fixedly connected with dead lever, the well pot head of dead lever internal surface is equipped with the stabilizer bar, and the spout has all been offered at both ends about the dead lever bottom, and the equal fixedly connected with motor bottom plate in upper end of the box left and right sides, the top fixed mounting of motor bottom plate have a motor, the output shaft fixedly connected with spiral shell rasp bar of motor, spiral shell rasp bar's surface cover is equipped with the swivel nut. The utility model discloses at body cavity's upper end fixedly connected with dead lever, be equipped with the stabilizer bar at the well pot head of dead lever internal surface to through the effect of spout, motor bottom plate, motor, spiral shell rasp bar and second fixed block and swivel nut, third fixed block, connecting rod, first fixed block and cutter, can effectual this device of improvement to the cutting efficiency of cable, solved its cutting inefficiency of present cutting device, bring inconvenient problem for the cutting work of cable.