To provide a lifting device capable of reclining a seat for a seat lifting and device for a vehicle by which the seat is lifted outside the vehicle in a state that a person sits on the seat and the person can enter into a cabin through an entrance, and the seat is lowered to the outside of the vehicle in a state that the person sits on the seat and the person can directly go down onto a road.

A turning bottom plate capable of turning to a predetermined angle to a door opening part is provided in the cabin of the vehicle, and an arm capable of lifting is provided on both sides of the turning bottom plate. Tips of the arms are connected to both side brackets upward of a seat support surface while having the seat between them. A seat back part is supported tiltably back and forth on a lifting frame.