Abstract: Objective To describe the prevalence and distribution of alcohol use disorders among adult residents in Liaoning province.Methods Totally 13 358 subjects aged 18－65 years were randomly selected from 3 cities and 3 counties with stratified multi-stage cluster sampling method and were assessed based on DSM Ⅲ-R diagnoses by face-to-face interview with Composite International Diagnostic Interview (CIDI) 1.0.Results The lifetime,12 month and 2 week prevalence of alcohol use disorder were 4.24%,3.45%,and 2.70% for all residents and 16.17%,6.88%,and 9.30% for alcohol drinkers,respectively.A significant dose-response relationship was observed betw een the lifetime prevalence of alcohol use disorders and the drinking days per week,and alcohol consumption daily.The risk factors of lifetime prevalence of alcohol use disorder were male(odds ratioOR=2.01,95% confidence intervalCI:1.28-3.15),smoking (OR=1.35,95% CI:1.08-1.68),divorced(OR=2.09,95% CI:1.30-3.36),alcohol consumption,and frequency of alcohol drinking.Conclusion The males,persons at the age of 25-54 years,smokers,and the divorced are populations at high risk and the key populations for prevention and control of alcohol use disorder.