LED overcurrent sterilizer. It uses advanced ultraviolet UVCLED high-efficiency water purification technology to destroy the DNA of microorganisms such as bacteria and viruses in water, achieving thorough sterilization and disinfection. It also realizes intelligent control operation and monitoring, and can be widely used in drinking water treatment, industrial circulating water treatment, swimming pool water treatment and other fields. It has unique advantages such as fast sterilization speed, no need to add chemical agents, avoiding secondary pollution, low operating cost, and easy maintenance.