Brake control device

A brake control device has a master cylinder (1), wheel cylinder (15), and a solenoid valve (21) disposed in a conduit (lla) between the master cylinder and the wheel cylinder. When a brake pedal (5) happens to be returned at sudden braking, at an idle stop or at vehicle stop on a sloping road, the solenoid valve is controlled at a duty rate based on a difference between a peak value of master cylinder and an actual value of master cylinder gradually reducing so that wheel cylinder pressure is held to a value higher than master cylinder pressure (140 to 165).