To provide a technique for quickly dispersing a chlorine dioxide gas from a generation site as well as generation thereof, and for controlling the dispersed chlorine dioxide gas to a uniform concentration in a whole chamber.SOLUTION: A sterilization device using chlorine dioxide gas comprises: an ultraviolet light irradiation unit irradiating a solid material including chlorite with an ultraviolet light to generate the chlorine dioxide gas； a heating unit heating the irradiation portion of the solid material including the chlorite when the ultraviolet light is irradiated to that solid material； and an agitation unit provided at a place separating from the irradiation portion at a prescribed distance and agitating the air including the chlorine dioxide gas.SELECTED DRAWING: Figure 1【課題】二酸化塩素ガスを生成と同時に素早く生成場所から拡散させ、さらに拡散させた二酸化塩素ガスを室内全体に渡って均一濃度にさせる技術を提供することを課題とする。【解決手段】二酸化塩素ガス殺菌装置であって、亜塩素酸塩を含む固形物に紫外線を照射し、二酸化塩素ガスを発生させる紫外線照射装置と、紫外線が亜塩素酸塩を含む固形物に照射される際に、亜塩素酸塩を含む固形物の照射部分を加熱する加熱装置と、照射部分から所定距離離れた場所に設けられ、二酸化塩素ガスを含む空気を撹拌させる撹拌装置と、を備える。【選択図】図１
