A fixing device for fixing an unfixed image on a recording sheet passing through a fixing nip formed by pressing a pressing member against an inside surface of a pressure belt via a low friction sheet, so that an outside surface of the pressure belt presses against a fixing member, wherein the pressing member includes a first pressing part whose front-side portion is an elastic pressing part, and a second pressing part whose front face presses against a rear face of the first pressing part, the second pressing part has a side wall near an upstream portion of the first pressing part that is upstream from the front-side portion with respect to a rotation direction of the pressure belt, and an upstream end of the low friction sheet, upstream from the other end with respect to the rotation direction, is sandwiched between the side wall and the upstream portion.