Bacitracin has been widely utilized in livestock breeding and cultivation, and it is necessary to screen strains for improving bacitracin production. In this study, low concentration of bacitracin was used to screen bacitracin producer, and one strain was isolated and identified as Bacillus licheninformis strain Y822. The optimal culture condition for the strain was p H7.0, and the improvement of oxygen supply was favorable to the production of bacitracin. B. licheninformis Y822 was sub-cultured for 5 gener...