Seat belt control device and method

A seat belt control device (1) is provided which comprises a drive motor (70) connected to a seat belt (2) for winding and unwinding the seat belt, a controller (10) for controlling the drive motor, a wearing state sensor (50) for detecting a wearing state of the seat belt (2), a vehicle speed sensor (20) for detecting a vehicle speed, and a deceleration sensor (40) for detecting deceleration of a vehicle. The controller shorts electrodes of the drive motor (70) to brake drive motor when the seat belt (2) is worn, the vehicle speed is higher than a first predetermined vehicle speed value, and an absolute value of the deceleration of the vehicle is lower than an absolute value of a first predetermined deceleration value. A seat belt control method is also provided.