Abstract: In recent years,the rapid development of large-scale livestock and poultry breeding industry makes the rearing intensities constantly elevate and subsequently results in the increasing ammonia emissions,which seriously affects the health of livestock and poultry and their productive performance.In addition,it also causes air pollution.Therefore,it is of great significance to conduct the researches on ammonia emission reduction of livestock farms for livestock health,animal product safety and the environment improvement.In this paper,a variety of ammonia emission mitigation technologies are reviewed from the following three aspects:endogenous ammonia nutritional regulation of livestock and poultry,in-situ purification of livestock and poultry house and process of waste disposal.The introduced ammonia emission reduction technologies include optimization of feed formula,application of fecal deodorant,establishment of air cleaning infrastructures as well as the solid-liquid separation and surface covering technologies in the process of waste disposal.The information provided by this paper may give a new insight into the selection and application of ammonia reduction technologies.