With the fast development of livestock breeding,serious environmental pollution issues caused by the large accumulation of animal feces have arisen increasingly. It is of great importance to re-use these organic matter resources in order to ease the environmental and resource problems. And we reviews the significance of microorganism for livestock development and particularly the close relationship between microorganism and biodegradation of animal breeding residues. These bacteria play important roles in odor control,degradation and conversion of organic matters,and even the reduction of animal waste discharging amount by adjusting the feed nutrition proportion or improving the digestibility of nutrients. Consequently,it shows good application prospect of microbe practice in the improvement of contaminated environment resulting from livestock farming residues and the utilization of livestock manure resource. With the fast development of livestock breeding, serious environmental pollution issues caused by the large accumulation of animal feces have arisen increasingly. It is of great importance to re-use these organic matter resources in order to ease the environmental and resource problems. the significance of microorganism for livestock development and particularly the close relationship between microorganism and biodegradation of animal breeding residues. These bacteria play important roles in odor control, degradation and conversion of organic matters, and the reduction of animal waste discharging amount by adjusting the feed nutrition proportion or improving the digestibility of nutrients. or, it shows good application prospect of microbe practice in the improvement of contaminated environment resulting from livestock farming residues and the utilization of livestock manure resource.