Abstract:The use of chemically synthesized food additives is increasingly limited because of the constant attention paid to food safety and their own health requirements.Biological preservatives have been the first choice for food additives，because of its characteristics of abundance，efficient，natural，safe and it can improve meat quality.The function and sources（animals，plants，microorganisms）of the biological preservative were summarized firstly.And then elaborated statistic of patent and the existing problems of the biological preservative，and finally the application prospect was made in order to provide reference for the study of the application of the biological preservative agent in the preservation of the meat.