Ultraviolet sterilizer has the characteristics of no dead angle, good light conditions, low energy consumption, flexible and convenient equipment installation and disassembly, no secondary pollution, etc. Compared with chlorine sterilization, ultraviolet sterilizer does not need to add chemical agents, no secondary pollution, no mixing equipment, greatly reducing the operating cost of the equipment. If it is drinking water, ultraviolet sterilizer is safe and will not have adverse effects on the human body due to excessive agents. Compared with ozone sterilizer, ultraviolet sterilizer has the advantages of low energy consumption, no large mixer, no fishy smell, etc. It not only looks good, but also reduces operating costs.