Abstract: The gases containing ammonia and sulfide emitted from livestock and poultry farms can cause nuisance to adjacent residents and contribute significantly to atmospheric pollution, and its pollution control has become one of the major environmental problems to be solved. Among all the treatment technologies, the microbial agents treatment technology have been paid more and more attentions duo to good effect, low cost and no secondary pollutants. The principle of this method is that the microbes can absorb the components of the polluted gases and then decomposed them to low-or non-hazardous substances by metabolic activity. Currently, while the microbial agents treatment is widely used, its efficacy largely depends on the absorption and decomposition ability of the incubated microbes to the substances in polluted gases and on the inhibitory ability against the native odors producing microbes. It is necessary to further assess the adaptability of the microbial agents to environment and the competitive relationships between microbial agents and native odors producing microbes for ensuring the good treatment effect against polluted gases. Furthermore, the isolation and acquisition of stains with superior treatment effect against ammonia and sulphide hydrogen containing gases is still the crucial point of the microbial agent treatment technology.