One of the most important technical issues of recent years is the effective and economical disposal of odor in air. Odor emitted in the swine houses were ammonia, hydrogen sulfide, methymercaptane, trimethylamine. The major compounds of odor were hydrogen sulfide and ammonia having concentration of 10 ~ 250 ppb and 8 ~ 25 ppm. Photocatalysis affected the degradation of hydrogen sulfide. The decomposition for hydrogen sulfide were enhanced in a fluidized photoreactor; the conversions to sulfate in hydrogen sulfide decomposition reached 99 % until 350 h at air bubbling of 6 l/min in 0.5 g/L TiO2