Abstract: ObjectiveTo investigate the prevalence of metabolic syndrome(MS ) among the residents over 18 years old in Cixi city,and to analyze epidemic characteristics and influencing factors of MS.MethodsWith multistage stratified random sampling,a cross-sectional survey was carried out among 1 147 residents in Cixi city.MS was defined based on the standard of International Diabetes Federation(IDF).ResultsThe MS prevalence rate was 24.59% and the standardized rate was 24.04%.The MS prevalence rate increased with age (χ²=72.48,P<0.01)and the adults of 60 years old had the highest rate.The prevalence rate of the females was higher than that of males(30.33%vs 18.77%,χ²=20.6;P<0.01).The residents with lower education had a higher prevalence rate.Among the people with different occupations,the retired and unemployed had the highest MS prevalence rate.Single factor analysis showed that the main MS risk factors were overweight and obesity,hypertension,diabetes and dyslipidemia (P<0.01 ).Multiple factor logistic regression analyses showed that the MS influence factors were age(odds ratio OR=6.431,95%confidence interval 95%CI=4.028-10.267),body mass index(BMI)(OR=3.968,95%CI=1.788-8.804),triglyceride(OR=3.732,95% CI=2.869-4.855),cholesterol (OR=1.519,95%CI=1.203-1.917),and high density lipoprotein cholesterol(OR=0.014,95%CI=0.006-0.036).ConclusionMS has become a major public health problem for Cixi residents.We should give priority to develop MS comprehensive intervention in communities.