To prevent an engine brake from disturbing the behavior of a vehicle by judging the effect given to the behavior of the vehicle by the engine brake, and controlling the engine brake based on it.

This vehicle behavior control device 10 considers whether an engine brake gives an effect to a vehicle behavior or not and whether inadvertent acceleration occurs on the vehicle or not and controls the engine brake on the desirable condition. When the hydraulic brake force exceeds the engine brake force, idle-up control is made. When the engine brake force exceeds the hydraulic brake force on the contrary, the engine brake is reduced. The hydraulic brake force becomes a half of the whole brake force or above, there is a time difference until the actual rise of driving force after the control, therefore a disturbance of the vehicle behavior and a sense of incompatibility given to an occupant can be prevented.