Control to inhibit a slip of a wheel by controlling braking/driving force generated at the wheel is performed when a slip ratio of the wheel of a vehicle according to a running state of the vehicle becomes larger than a slip ratio threshold value set in advance or when a ratio between wheel acceleration of the wheel and a vehicle speed of the vehicle according to the running state of the vehicle becomes larger than a ratio threshold value. Therefore, it is possible to improve control accuracy when controlling a slip state of the wheel by decreasing an effect of operation by a driver and a road surface and the like, for example.