Abstract: The effect of washing concentration of sodium hypochlorite water solution for fresh soybean pods on surface microbial population,tissue electrolyte leakage rate and sensory attribution during cold storage were investigated.The result showed that,sodium hypochlorite water solution can reduce and delay the growth of soybean pods surface microorganisms during the storage time,and the higher concentration the better antibacterial effect,but higher concentration of sodium hypochlorite water solution also might accelerate soybean pods quality fission. 250 mg/L free chlorine concentration of acidification sodium hypochlorite as washing solution with polyethylene film packaging and cold storage can extend the shelf life of fresh soybean pods to 31 days.