A fusing apparatus having a heating rotary member, a pressing rotary member, a flange, a fusing frame, a pressing member, and a plate. The heating rotary member heats a recording medium and includes a heater and a film that rotates. The pressing rotary member rotates to press an outer circumferential surface of the film and performs fusing of a toner image on the recording medium. The flange supports the heater. The fusing frame supports the pressing rotary member and has a positioning hole. The pressing member presses the flange. The plate includes a pressure receiving portion and an insertion portion. The pressure receiving portion is pressed by the pressing member and the insertion portion is inserted into a positioning hole and positioned in a first state. The insertion portion is removed from the positioning hole in a second state where the pressing member further contracts from the first state.