A light irradiation apparatus capable of safely irradiating an affected area with light is provided. A light irradiation apparatus includes a housing, an ultraviolet light source, a visible light source, and a control unit. The ultraviolet light source 14 includes a first ultraviolet light source 26 that emits light having a wavelength of UVA (ultraviolet A wave) and a second ultraviolet light source 28 that emits light having a wavelength of UVB (ultraviolet B wave). The control unit 18 supplies power to the ultraviolet light source 14 and the visible light source 16 simultaneously. Since the ultraviolet light source 14 and the visible light source 16 emit light simultaneously, a person can recognize the light emission of the ultraviolet light source 14. [Selection] Figure 1【課題】安全に光を患部に照射できる光照射装置を提供する。【解決手段】光照射装置１０は、筐体１２、紫外線光源１４、可視光線光源１６および制御部１８を備える。紫外線光源１４はＵＶＡ（紫外線Ａ波）の波長の光を発光する第１紫外線光源２６とＵＶＢ（紫外線Ｂ波）の波長の光を発光する第２紫外線光源２８を備える。制御部１８は紫外線光源１４と可視光線光源１６に対して同時に電力を供給する。紫外線光源１４と可視光線光源１６が同時に発光することで、人が紫外線光源１４の発光を認識できる。【選択図】図１
