High-efficiency ultraviolet sterilizer

The invention discloses a high-efficiency ultraviolet sterilizer. The sterilizer provided by the invention comprises a sterilizer chamber, an ultraviolet light tube, a quartz glass sleeve and a sterilizer body with a water inlet and a water outlet; and an inner wall of the sterilizer chamber is also provided with an ultraviolet reflecting layer. The ultraviolet reflecting layer can be made of the quartz glass of which the surface is provided with aluminum or an aluminum alloy, or a fluorocarbon material. The high reflecting inner wall which is made of the quartz glass sleeve, the aluminum (the vacuum plating aluminum or an aluminum foil stuck outside) or the fluorocarbon material has the characteristics of high ultraviolet reflection, resistance to ultraviolet radiation, resistance to erosion and resistance to flow water impact; and compared with the inner wall of a normal stainless steel sterilizer, the inner wall of the chamber has the advantages that: when the inner wall of the chamber is irradiated by an ultraviolet lamp with the same power, the average ultraviolet light intensity inside the chamber can be increased by over 50 percent.