A motor control device of the present invention is a control device for a motor for driving a feed shaft of a machine tool, and includes: a power outage detector for detecting a power outage of a power source for supplying power to drive the motor; a forcible decelerator for forcibly decelerating the motor in response to a torque command when a power outage is detected; a DC link voltage monitor for monitoring a DC link voltage applied to an amplifier for driving the motor; a determination unit for determining whether the value of the DC link voltage is greater than a first threshold, or whether the change ratio of the DC link voltage is greater than a second threshold; and, a torque command limiter for limiting the torque command to a predetermined torque command limiting value, in accordance with the result of determination at the determination unit.