In accordance with an embodiment, a fixing apparatus comprises a belt which is equipped with a conductive layer; an induction current generator which faces the belt and heats the conductive layer through an electromagnetic induction system; a magnetic material which faces the induction current generator across the belt; a measurement section which measures a state of the magnetic material; and a controller which controls a frequency applied to the induction current generator based on a measurement result of the measurement section in a case in which at least a print request is not received.