A fixing apparatus 50 capable of reducing noise during a fixing operation using a fixing belt 1 having a metal layer includes the fixing belt 1 stretched between a fixation roller 2 and a fixation tension roller 3. The fixing apparatus 50 further includes a coil 4b which is disposed opposite from the fixation tension roller 3 via the fixing belt 1 and is supplied with an AC (600 V, 25 kHz at maximum) by an IH controller 10, so that the fixing belt 1 and the fixation tension roller 3 are simultaneously heated by induction heating. In the fixing apparatus 50, insulating belt flanges 25a and 25b are attached to the fixation tension roller 3 at both end portions of the fixation tension roller 3 to limit movement of the fixing belt 1 in a width direction of the fixing belt 1.