Jerusalem artichoke polysaccharide and extracellular polysaccharide of lactic acid bacteria have different functional properties which are probiotic.In this paper,a Lactobacillus plantarum with high EPS-producing capacity was selected for direct vat set(DVS) culture starter and prepared for Jerusalem artichoke pickles.The changes of the pH,total acid,viable count,vitamin C,amino acid nitrogen and soluble solids content in the pickle liquid were studied,while the effect of inulin which is the main component of artichoke on growth of Lactobacillus plantarum was studied.The yield of extracellular polysaccharide produced by the strain was determined.The results showed that inulin could promote the growth of Lactobacillus plantarum,and the yield of extracellular polysaccharide was up to 471 mg/L after 24h under the temperature of 37℃.Various indexes of Jerusalem artichoke pickle direct investment indicators were better than natural fermentation.The pH was up to 3.46,total acid content was 0.36%,the number of viable cells remained at 4.3 × 108 CFU/mL,content of vitamin C was 16.92%,content of amino acid nitrogen was 0.033%,and content of soluble solids was 15% in the pickle liquid fermented directly by the starter.The acidity of pickle products was optimum,and the liquid showed attractive white with high viable cells and rich extracellular polysaccharide.The Jerusalem artichoke pickles was of benefit to the health of the young and old due to the higher nutrition.