Alcohol use disorder（ AUD） is the most common addiction disorder worldwide. Long-term heavy drinking can cause physical， mental and family social harm， which has become one of the important causes of death. Although a growing number of studies suggest that there is functional impairment in the brain of patients with AUD， this abnormality has not been systematically discussed. This paper reviews the research progress of functional imaging studies on AUD at home and abroad based on MRI and summarizes the imaging characteristics. It is hoped that it could help clinicians fully understand the changes of functional imaging in patients with AUD and contribute to clinical diagnosis and treatment.