The present invention provides an image heating apparatus capable of holding an open/close unit at a normal position and capable of inexpensively avoiding conveyance failure and deterioration in image quality. An image heating apparatus includes a fixing roller 71 and a pressing belt 731, a pressing mechanism 75 which rotates a pressing belt unit 73 having a pressing belt 731 to retract the pressing belt 731 from a pressing contact position, a separation projection 800 which separates the sheet S from the pressing belt 731, and an open/close unit 81 which rotates a separating unit (separation projection 800, division plate 817) to retract the separation projection 800 from a separating position. The pressing belt unit 73 includes a push-up member 840 which locks the separating unit located in the separating position when the pressing belt unit 73 is in the pressing contact position.