To prevent transmission of a shock in a wheel to a vehicle body and achieve both of riding comfort and driving stability of a vehicle by controlling an electric current supply quantity.

Electromagnets 31, 41 held by a housing part 63 are arranged between the vehicle body and the wheels, and a clearance between the electromagnets 31, 41 is filled with compressed air. In an electric power controlling unit 11, an electric current supply quantity to the electromagnets 31, 41 is appropriately controlled on the basis of detection signals from a vehicle speed sensor 1, a steering wheel steering angle sensor 3 and the like and the detection signal from an expansion sensor 51, and for example, both of vertical movement of the wheels and expanding/shrinking movement of the electromagnet 41 for repulsion is controlled while an inclination of the vehicle body is prevented.