An apparatus for measuring the fatigue of a user includes a first sensor configured to sense a factor causing the fatigue of a user； a second sensor configured to sense a brain wave signal of the user； and a processor configured to calculate a primary fatigue of the user based on the factor sensed by the first sensor, to calculate a secondary fatigue of the user based on the brain wave signal sensed by the second sensor, and to measure the fatigue of the user by using the primary fatigue and the secondary fatigue.
