Objective: This study aimed to isolate lactic acid bacteria(LAB) from mare's milk and its products, which have nationality characteristics and special functions. The mare's milk and its products were made by natural fermentation in pastoral areas of Inner Mongolia. In order to ensure their safe application in the food fermentation industry, it is necessary to assess the safety of LAB isolated from mare's milk and koumiss. Methods: Indole test, nitrate reductase assay, amino decarboxylase test, hemolysis tes...