Abstract: Objective To describe the current status of adult overweight and obesity in urban and suburb areas of Qingdao and analyse relative risk factors.Methods Residents above thirty-five were investigated and analyzed by multi-stage cluster random sampling in six districts(Shinan、Shibei、Sifang、Jimo、Huangdao and Jiaonan)of Qingdao.Results The total overweight rate was 42.61% and the obesity was 25.06%.In urban the overweight rate was 41.96% and the obesity was 23.45% and the man's was higher than the woman's.The overweight rate was 43149% and the obesity was 26.61% in rural areas.There was no difference between man and woman.The prevalent rates of overweight and obesity in all age groups showed significant differences.The rates increased with the age growth but decreased after sixty five.The obesity rates of forty five～and fifty five～groups were obviotisly higher in suburb than in urban.The resutlts of Logistic regression analysis showed that education background and smoking played a protective roles for the development of overweight and obesity in urban,while income displayed inverse correlation and physical activity affected overweight only.Smoking and physical activity had a positive correlation to obesity while in rural areas the influencing factor of overweight was the same as that in urban.Conclusion The rates of adult overweight and obesity in Qingdao are higher than those in the description on the Chinese national nutrition and health survey in 2002.Physical activity is an important influencing factor.To increase physical activity would do good to prevent and control overweight and obesity.