Multi-storey elevator

A multi-storey elevator further comprises an elevator car which is arranged on one side in a multi-storey building exterior facade recess and is opposite to a staircase. One end of the elevator car is provided with a first automatic induction door which is in linkage with elevator doors at all flat layers on the staircase, and the other end of the elevator car is provided with a second automatic induction door. An overhead beam is arranged above the elevator car, wherein the two ends of the overhead beam are supported by a building body of a multi-storey building, and the overhead beam is transversely arranged at the multi-storey building exterior facade recess. The two sides of the elevator car are each provided with a vertical lead screw, the upper ends of the two lead screws are fixedly connected with the overhead beam, the lower ends of the two lead screws are provided with foot ends fixedly connected with the ground, the two lead screws are each provided with a lead screw lifter, and bodies of the two le