A fixing apparatus for fixing an toner image transferred onto a paper sheet, including: a fixing roller having a heater and an elastic layer on an external circumference surface thereof; a fixing belt driven by the fixing roller; a pressuring member which forms a nip portion between the fixing roller and the fixing belt; a separating member being arranged in a down stream of the pressuring member in a conveyance direction of a paper sheet, and being arranged to press the fixing belt; a pressing member which presses an edge of the separating member in a direction to which the fixing belt is pressed, and changes a position of the separating member relative to the fixing roller; and a plurality of adjusting members being provided in a longitudinal direction of the separating member and being arranged to adjust a position of the pressing member.