In this study,Lactic acid bacterium was isolated from the samples of milkand milk products collected from the herdsman's home in Darhan-Momiangan UnitedBanner. and Sunlit Right Banner in Inner Mongolia. Its biological properties were studied. 44 strains of Lactic acid baciteria, including one strain of Leuconostoc lactic andtwenty strains of Leuconostoc paramesenteriodes, were isolated. The results .revealedthat, on the whole,the strains tested had the same morphological and staining characterand biochemica...