To learn about the quantitative contaminated level and the seasonal change trend of Campylobacter in chicken retail part of Chengdu, and provide foundation for food safety risk assessment.Methods Choose the large supermarkets and the farmers markets in and surrounding Chengdu City as the sampling points, take the undivided fresh chicken and frozen chicken as samples. Count by spread plate method and identify by multiplex PCR. Results A total of 202 positive samples were detected from 255 specimens ,with the detection rate of 79.22%. The detection rate of samples, which contamination quantity of Campylobacter was more than 500 cfu/g, reached 32.55%(83/255). The positive rate of samples in the farmers markets was higher than that in the supermarkets. The positive rate in summer was higher than that in other seasons. 300 Campylobacter jejuni strains,393 Campylobacter coli strains and 11 Campylobacter fetus strains were isolated.Conclusion Chicken at the retail part was polluted seriously by Campylobacter in Sichuan Province. Supervision departments should take measures to improve the sanitation in the farmers markets and reduce cross-contamination during slaughter the chicken. Meanwhile, the public should also enhance food safety awareness and avoid cross-contamination through cooking.