Excimer lamp water treater

The utility model discloses an excimer lamp water treater which comprises a shell, at least one excimer lamp tube transversely arranged in the shell, an outer electrode, an inner electrode axially arranged in the excimer lamp tube, and a power transmission assembly for providing electric energy for the inner electrode, a water inlet is formed in the top of one end of the shell, a water outlet is formed in the bottom of the other end of the shell, and a cavity for containing liquid is formed between the shell and the excimer lamp tube; the cavity filled with water forms the outer electrode, and a working cavity of the excimer lamp is formed between the inner electrode and the outer electrode. According to the water treater, the excimer lamp tube is used as a light source, and different working gases are adopted, so that an ultraviolet spectrum richer than that of a low-pressure mercury lamp can be obtained, and the safety performance is better; the cavity is filled with water to form the outer electrode, a qua