A vehicle stabilization controlling apparatus comprising: a yaw direction behavior estimating means that estimates a yaw direction behavior of a vehicle; a brake means capable of generating braking forces to wheels provided with the vehicle by changing hydraulic pressures of an operating fluid by a brake operation of a driver; and a brake means control means that is disposed capable of controlling the braking forces by controlling the hydraulic pressures of the operating fluid by controlling the brake means as well as performs a brake assist control that is a control for generating the braking forces equal to or larger than the braking force generated by the brake operation by increasing the hydraulic pressures that change in response to the brake operation when the brake operation is performed at an operation speed equal to or larger than a predetermined change speed, performs a left/right distribution control that is a control for reducing the yaw direction behavior by making a difference between the braking forces generated to left/right wheels by making a difference between the hydraulic pressure that generates the braking force to a left side wheel and the hydraulic pressure that generates the braking force to a right side wheel in the left/right wheels when the yaw direction behavior estimated by the yaw direction behavior estimating means is equal to or larger than a predetermined behavior, and characterized in that the brake means control means further performs a control for making pressure increasing gradients when the hydraulic pressures are increased to a same pressure increasing gradient in the hydraulic pressure for generating the braking force to the left side wheel and in the hydraulic pressure for generating the braking force to the right side wheel and for generating a braking force equal to or larger than the braking force generated by the brake operation in a state where the difference between the braking forces generated to the left/right wheels is made constant when the brake assist control and the left/right distribution control are performed at the same time. a yaw direction behavior estimating means that estimates a yaw direction behavior of a vehicle; a brake means capable of generating braking forces to wheels provided with the vehicle by changing hydraulic pressures of an operating fluid by a brake operation of a driver; and a brake means control means that is disposed capable of controlling the braking forces by controlling the hydraulic pressures of the operating fluid by controlling the brake means as well as performs a brake assist control that is a control for generating the braking forces equal to or larger than the braking force generated by the brake operation by increasing the hydraulic pressures that change in response to the brake operation when the brake operation is performed at an operation speed equal to or larger than a predetermined change speed, performs a left/right distribution control that is a control for reducing the yaw direction behavior by making a difference between the braking forces generated to left/right wheels by making a difference between the hydraulic pressure that generates the braking force to a left side wheel and the hydraulic pressure that generates the braking force to a right side wheel in the left/right wheels when the yaw direction behavior estimated by the yaw direction behavior estimating means is equal to or larger than a predetermined behavior, and