The Electric order picker is mainly composed of lifting system, body system and electrical system. The Electric order picker lifting system consists of an inner door frame, an outer door frame, a cargo fork frame, an inner slide frame, a top guard frame and a guardrail. The inner and outer door frames are welded parts. The outer door frame is welded by two symmetrical left and right columns, upper beam, lower beam, and connecting shaft of the door frame. The inner door frame column is J-shaped structure. The lower end of the left and right lifting oil cylinders (single oil cylinders) is fixed on the column of the outer door frame, and the upper end is connected with the inner door frame. The cargo fork and human standing foot pedal are installed on the inner slide frame and are raised with the inner slide frame. When lifting, the inner door frame extends under the thrust of the lifting cylinder piston, driving the sprocket to rise, and the chain drives the slide frame to rise along the inner door frame at twice the speed.