Abstract: Provided is OH radical air sterilization lamp quartz tube casing device that removes germs and odor from air and decomposes harmful gases contained in the air. The OH radical air sterilization lamp quartz tube casing device can decompose organic and inorganic harmful gases contained in air and remove germs and odor from air. Furthermore, the OH radical air sterilization lamp quartz tube casing device can be used to sterilize water. The OH radical air sterilization lamp quartz tube casing device includes a light emitting unit emitting UV light, a casing enclosing the light emitting unit, a fiber (glass-fiber) carrier wrapped around the casing, a catalyst (TiO2) plate layer formed on the fiber carrier, and a fixing member fixing the fiber carrier to the casing.