A vehicle brake device includes: a braking-operation detecting circuit for
detecting an amount of the braking operation given by a driver; a driver
condition detecting circuit 4 for detecting driving conditions of the
driver; a braking-condition determining circuit for determining whether
the vehicle is in emergency or not on the basis of the driving conditions
detected by the driver condition detecting circuit; and a braking-force
control circuit for control a braking force of the vehicle in accordance
with the determination by the braking-condition determining circuit and
the braking-operation amount detected by the braking-operation detecting
circuit 2.