Alcoholic liver disease(ALD)is a liver disease caused by long-term heavy drinking.With the improvement in the living standard of Chinese people,the incidence rate of ALD tends to increase significantly.The typical pathological patterns of ALD include alcoholic steatosis,alcoholic steatohepatitis,liver fibrosis,and alcoholic cirrhosis.The diverse and complex pathological morphology of ALD and its similarities with other liver diseases pose a great challenge to pathologists.This article reviews the histopathological morphology,grading and staging systems,and differential diagnosis of ALD.