UV disinfection, which has the advantages of high stability, high bactericidal life of 10000 hours. The use of ultraviolet characteristics, to kill bacteria, viruses, yeasts and algae in water, do not need to add any chemicals and do not need to heat or cool, that can achieve the disinfection effect, is the first choice of green environmentally friendly products. UV irradiation of bacteria or viruses, so that a large number of bacteria or viruses to maintain the life of the main components of nuclear protein nucleic acid molecules, due to a large number of ultraviolet absorption and the occurrence of changes, in order to destroy the physiological activity, to achieve the purpose of sterilization. Ultraviolet sterilizer main internal and external using 304L or 316L stainless steel material, internal and external subject polishing treatment to strengthen UV irradiance, ensures that the object to be sterilized in disinfection and sterilization process does not have incomplete sterilization.