A vehicle brake system including: a brake operation member to be operated by a driver; a brake device configured to generate a braking force in accordance with an operation of the brake operation member; an operation amount sensor configured to detect an operation amount of the brake operation member; and a controller configured to control the braking force generated by the brake device, wherein the controller determines whether the brake operation member is in an operating state or in a non-operating state and controls, based on the determination, the braking force, and wherein the controller determines that the brake operation member is in the operating state when the operation amount exceeds an operating-state determining threshold and determines that the brake operation member is in the non-operating state when a time not less than a first set time elapses with the operation amount kept less than a non-operating-state determining threshold.