At first,sorts of lactobacillus were illustrated simply,bacteriocins of lactobacillus were categorized according to their structures,composition and function characters of diverse bacteriocins of lactobacillus were introduced.In addition,composing process and possible mechanisms of antibacterial activity were described,and inner factors and outer factors affecting antibacterial activity of bacteriocins of lactobacillus were analyzed.At last,current applications of bacteriocin from lactobacillus in food were manifested,and application prospect of bacteriocin was also discussed and forecasted.