A fixing apparatus feeds a sheet that is unfixed through a nip formed between a heating member and a pressurizing member to thermally fix the sheet, and includes a cooler that cools the pressurizing member, wherein when a fixing job is performed on a sheet whose sheet width is a second width larger than a first width, after a fixing job is completed on a sheet whose sheet width in an orthogonal direction to a sheet feeding direction is the first width, the cooler cools a difference region in which a first sheet feeding region of the pressurizing member through which the sheet having the first width is fed and a second sheet feeding region through which the sheet having the second width is fed are not overlapped with each other, with a cooling power stronger than that of a region corresponding to the first sheet feeding region.