The effects of inoculated lactic acid bacteria on pickling process and quality of sweet and sour Allium chinense was discussed. The results showed that the comparatively high concentration of acid (0.92%) was achieved at the 5th day when Allium chinense was pickled in the medium containing lactic acid bacteria and lactic acid. However, in conventional dry-pickling or wet-pickling process in which natural bacteria were used for fermentation, 30 or 15 d were needed to produce similar amount of acid (0.94% or 95%), respectively. The fermentati...