Abstract:44 lactic acid bacterias were isolated from the local kimchi of Nanchong by plate coating method.The MRS medium plate were used which bromocresol purple was added.The two lactic acid bacterias strains with higher degradation rate were obtained by using the rescreening index with the degradation of heavy metal lead.The lead tolerance，acid production，acid and bile tolerance were tested.Based on the comprehensive test results，the strain PC12 with the strongest lead degradation ability was selected as the target strain.Finally，the strain was identified as Lactobacillus plantarum by biochemical identification and 16SrDNA molecular.