The utility model relates to a photocatalyst Book sterilization device, which comprises a casing body, a dust collecting tray, a book supporting frame, an ultraviolet mechanism, a Book blowing fan, a photocatalyst mechanism and a control unit； each surface of the casing body is provided with a reflecting surface, wherein the reflecting surface at the rear is always a porous reflecting plate, the book supporting frame is vertically convex in front of the porous reflecting plate, and the book is provided with a Book inserted by the inner page. Therefore, the UV mechanism, the book blower fan and the photocatalyst mechanism are located behind the porous reflector.The UV mechanism is designed to radiate UV light from the middle height. According to this, through the reflection of each reflective surface, combined with the turning function of the book blower fan, the UV light can be more comprehensive into all angles of the book. In addition, the sterilization effect of the light catalyst mechanism can greatly improve the sterilization effect of the book.一種光觸媒圖書殺菌裝置，該裝置包含機殼本體、集塵托盤、書本撐開架、紫外線機構、吹書風扇、光觸媒機構及操控單元；該機殼本體內部各面皆設為反射面，其中後方一直立反射面為多孔反射板，該書本撐開架直立凸設於多孔反射板前方，提供書本由內頁插設於此，該紫外線機構、吹書風扇及光觸媒機構係則置於多孔反射板後方。所設紫外線機構由中間高度向外發散紫外線，據此，透過各個反射面的反射，再配合吹書風扇的翻頁作用，可令紫外光線更全面性的深入書本各個角度，加上光觸媒機構的殺菌功效，更是大幅提昇圖書殺菌效果。
