Objective:To monitor the Salmonella contamination status of commercial chicken products in Nanjing city through detecting Salmonella qualitatively and quantitatively. Methods:Retail chicken products were collected from supermarkets and farmers markets in different region of Nanjing city. Samples were examined by polymerase chain reaction (PCR) and most probable number (MPN) method. Cumulative distribution was used to fit the contamination level of the positive and negative samples,and Discrete distribution was used to all. Results:Of the total 288 chicken products,43 (14.9%) tested positive for Salmonella. In regard to the positive rate of Salmonella,no significant difference was observed among the six different samples. Prevalence of Salmonella in chicken products from farmers markets was higher than that from supermarkets. During the eight surveillance monthes,the top two contamination rate was detected in June and July,27.5% and 20.0% respectively . MPN value of negative samples was 0.009 MPN perg and that of positive samples was 1.080 MPN per g,0.018 MPN per g for the average. Conclusion:The overall pollution situation of Salmonella in retail raw chicken products of Nanjing had aroused public concern,enhanced quantitative monitoring of the Salmonella infection was needed.