Pure water pipeline bacteriostasis device

The utility model relates to the technical field of pure water pipelines, and discloses a pure water pipeline bacteriostasis device which comprises two groups of shunt joints, sterilization pipes are respectively arranged on two sides between the two groups of shunt joints, water flow is divided into two strands by arranging the shunt joints, and the two strands are connected by arranging the two sterilization pipes. Through the arrangement of the valve, when the sterilization assembly arranged on one sterilization pipe breaks down, the other sterilization pipe can still continue to operate and conduct sterilization continuously, and the sterilization assembly can be conveniently maintained or replaced by closing the valve on the broken-down side; light rays of the ultraviolet germicidal lamps can penetrate through the transparent shell to sterilize the interior of the sterilization pipe, and the ultraviolet germicidal lamps are arranged in a circle, so that light irradiation is more comprehensive, and the st