UV photo oxygen is a special high-energy and high ozone UV light beam to irradiate the odor gas, cracking the odor gas such as ammonia, trimethylamine, hydrogen sulfide, methylthiol, methylthiol, dimethyl ether, dimethyldisulfide, carbon disulfide and styrene, sulfide H2S, VOC, benzene, toluene and xylene molecular bonds, so that the pollutant molecules in free state can be combined with ozone oxidation to form small molecule free Harmful or low harmful compounds, such as CO2, H2O, etc.