PROBLEM TO BE SOLVED: To provide an ultraviolet treatment apparatus capable of optimally applying ultraviolet light to a three-dimensional surface.SOLUTION: An ultraviolet treatment apparatus 100 includes an irradiation device 10 that includes a frame structure 20 provided to enclose an irradiation object and is configured to apply ultraviolet light to the irradiation object from a plurality of positions in the frame structure 20, and to apply visible light in the same direction as the ultraviolet light application direction from a plurality of positions. The ultraviolet treatment apparatus 100 may further include a control unit 50 that causes the irradiation device to apply the ultraviolet light to the irradiation object after having applied the visible light to the irradiation object.SELECTED DRAWING: Figure 1【課題】立体的な表面に対して至適量で紫外線照射が可能な紫外線治療装置を提供する。【解決手段】紫外線治療装置100は、照射対象を囲うように設けられるフレーム構造20を含み、フレーム構造20内の複数の位置から照射対象に向けて紫外線を照射でき、複数の位置から紫外線の照射方向と同じ方向に可視光を照射できるよう構成される照射装置10を備える。紫外線治療装置100は、照射対象に向けて可視光を照射させた後に、照射対象に向けて紫外線を照射させるよう照射装置を動作させる制御装置50をさらに備えてもよい。【選択図】図1