PURPOSE: To provide the brake driving device for inductrial sewing machine making a brake collision sound of a motor reduced.

CONSTITUTION: At the start of generating a stop signal LSW, the number of rotations N is decelerated gradually by applying the power of brake intermittently. After the detection of the number of rotations of motor or pulley is confirmed to be reduced to a prescribed rotation speed, a control signal of time width T is applied. By generating a pulse brake signal at the first part of the time width T, the brake collision sound at the stop time is reduced.