Provision of an invisible light irradiation apparatus in which aiming light can always be recognized in an observation portion image in a normal light observation mode and a special light observation mode, and a method for controlling the invisible light irradiation apparatus. An invisible light irradiation apparatus comprising: an invisible light source which emits invisible light for irradiation of an object to be irradiated; and a guide light source which emits guide light for being combined with the invisible light to irradiate the object to be irradiated to recognize the position of irradiation of the invisible light, wherein a plurality of the guide light sources which emit the guide light in different wavelength regions are provided.