The malodorous gases such as ammonia, trimethylamine, hydrogen sulfide, methyl mercaptan, methyl mercaptan, methyl mercaptan, and styrene, sulfides, class h2s、voc, benzene, toluene, and the molecular chain structure of organic or inorganic macromolecular malodorous compounds are irradiated by special high energy high ozone uv ultraviolet beams to change the degradation into low molecular compounds, such as co2、h2o.