Main lactic acid bacteria fermenting "Baechu Kimchi" and" "Dongchim", which are indigenous fermented food in Korea, were isolated at optimum fermentation period and identified. The three groups of food preservatives-sorbic acid, p-hydroxybutyl benzoate (POBB), p-hydroxypropyl benzoate (POPB), and sorbic acid-POBB were prepared, and the effect of the food preservatives and various salt concentrations on those lactic acid bacteria was examined. The results obatined are as follows; 1. Lactic acid bacteria were isolated from "Baechu Kimchi" and "Dongchimi" and identifed as Leuconostoc mesenteriodse, Lactobacillus plantatum, Lactobacillus brevis, Streptococcus faecalis, and Pedicoccus pentosaceus. 2. Lactic acid bacteria were grown much better at 0.5-2% NaCl level than 0% NaCl level. 3. Among the isolated lactic acid bactera, Lactobacillus plantarum showed the highest acid producibility. The lower the concentration of NaCl, the higher the acid producibility by Leuconostoc mesentroides, and the other bacteria produced a large amount of acid at 0.5-2.5% NaCl level. 4. Both the sorbic acid (0.05-0.1%) and sorbic (0.05%)-POBB (0.004%) groups showed the highest preservatives effect. In contrast, however, POPB (0.01%) Group showed the lowest effect, and the preservatives effect was enhanced by the addition of NaCl. Lactobacillus plantarum was least affected by all preservatives, whereas Leuconostoc mesentroides was most affected by them.