Abstract：Under the influence of pathogens, viruses, stress and other factors, it is easy to cause the intestinal dysfunction of livestock and poultry. Antibiotics can prevent or treat infections caused by pathogenic bacteria, whereas the abuse of antibiotics will bring a series of hazards to the livestock products and environment, which are a huge threat to human health. Therefore, raising livestock withoust using antibiotics inevitable becomes a trend. Probiotics play an important role in livestock and poultry breeding(LPB).Lactic acid bacteria(LAB)are a vital part of probiotics. It promotes the growth of the body, the function of the gastrointestinal tract, the immunity of the body, and maintains the balance of the intestinal flora of the animal. Hence, LAB can be used as an alternative to antibiotics in LPB. This paper mainly summarizes the mechanism and application range of LAB in probiotics in LPB, and emphasizes the advantages and disadvantages of LAB compared with other major probiotics in LPB, and expounds application of LAB in the combination model of plantingand cultivation，and provides the prospects for the future development of LAB.
