Abstract: Objective To investigate the prevalence of alcohol use disorders among residents aged more than 18 years in Dalian city.Methods Totally 5 059 urban and rural residents over 18 years old were selected with multi-stage stratified cluster random sampling.The Composite International Diagnostic Interview3.0(CIDI 3.0)was used as the interviewtool.Results The total prevalence of alcohol use disorders was 3.50% and there was a statistical difference in the prevalence between male and female(7.30% vs 0.30%,P<0.01).There was no statistical difference in the prevalence between urban and rural residents.The prevalence increased with age.The people with different education level had different prevalence and the prevelence was inversely correlated with education level.Conclusion Alcohol use disorder has become a public health problem among the residents in Dalian city.Male and people with loweducation have a higher risk of alcohol use disorder.