To provide a brake control system capable of estimating proper solenoid valve temperature without providing a sensor to detect the temperature of a solenoid valve for each of the solenoid valves and capable of restraining heating of the solenoid valve by restraining excessive electric current supply by temperature compensation.

Atmospheric temperature of the brake control device is estimated in accordance with input showing using circumstances of the device in a step 100, coil temperature of the solenoid valve is estimated in accordance with temperature transmitting characteristics of the solenoid valve corresponding to the estimated atmospheric temperature in a step 300, and an output duty ratio of the solenoid valve is corrected in correspondence with the estimated coil temperature in a step 400.