Abstract: Objective To describe the prevalence and risk factors of alcohol use disorders among people aged 18 years and older in Xiamen city, Fujian province.Methods Using multi-stage stratified cluster sampling, 12 071 residents aged 18 years and older were selected in Xiamen city.The subjects were screend with the expanded version of 12-Item General Health Questionnaire(GHQ-12) and classified as having a high, moderate or low risk of mental disorder based on the results.Different proportions of the three groups(100% of high-, 40% of the moderate-, 10% of the low-risk) were assessed with the Structured Clinical for Diagnostic and Statistical Manual-IV-Axis I Disorders to determine whether they had mental disorder and specific diagnosis, and then the risk factors of alcohol use disorders were analyzed.Results The 12-month and life-time prevalence of alcohol use disorders were 0.30% and 1.14% among the subjects.There were 38 cases suffering from life-time alcohol abuse and 19 cases suffering alcohol dependence(1 case of alcohol abuse comorbidity with alcohol dependence), with the prevalence of alcohol abuse and alcohol dependence of 0.81% and 0.33%, respectively.Multivariate non-condition logistic regression showed that the risk factors of alcohol use disorders were male, with per household income of greater than or equal to 10 800 RMB yuan.Among 49 alcohol use disorder cases, only 6.12% had ever received at least one type of mental health treatment, 2.04% had ever received non-mental health treatment, and 91.84% had never sought any help.Conclusion The prevalence of alcohol use disorders was relatively low among the residents in Xiamen city, but males and persons with higher household income were the key populations for the prevention of alcohol use disorders.