The objective of the present invention is to provide a vehicle behavior control device, wherein vehicle behaviors are quickly detected by use of a small number of sensors for achieving stability without sacrificing speed while giving a driver natural, smooth steering. According to the present invention, the vehicle behavior control device includes: a force detecting unit for detecting a tire force acting on each wheel of a vehicle; a yaw moment computing unit for computing a yaw moment of the vehicle based on the tire force acting on each wheel detected by the force detecting unit, the yaw moment being generated by a driving force transmitted to each wheel; a cornering power computing unit for computing a cornering power of each wheel based on the tire force acting on each wheel detected by the force detection unit; and a correcting unit for correcting the yaw moment based on a moment of inertia of the vehicle and the cornering powers.