An image heating apparatus includes a coil for generating magnetic flux; a rotatable heater, having an electroconductive layer which generates heat by the magnetic flux, for heating an image on a recording material, the heater being disposed inside the coil; a magnetic member; a detector, disposed in an area between the magnetic member and an area of the heater opposing the coil, for detecting a temperature of the heater; an electric wire electrically connected to the detector; and an interruptor, for interrupting electric power supply to the coil on the basis of an output of the detector supplied through the electric wire. The magnetic member includes an opening through which the wire passes.