Disclosed is an apparatus for detecting rotation of a motor, including a first switching device and a second switching device that are connected to a power supply, a third switching device and a fourth switching device that are connected to a ground, a motor connected between a first node to which the first switching device and the third switching device are connected and a second node to which the second switching device and the fourth switching device are connected, a first resistor device and a second resistor device that are disposed between the third switching device and the ground and between the fourth switching device and the ground, respectively, and a controller configured to derive a rotation amount of the motor through integration of current flowing in the first resistor device or the second resistor device by counter-electromotive force generated when the motor brakes.