The diagnostic criteria for alcoholic fatty liver include fatty liver associated with alcohol consumption, a history of long-term alcohol consumption with daily alcohol consumption exceeding the prescribed value, and a history of heavy alcohol consumption within 2 weeks. 1. The diagnosis of alcoholic fatty liver should first clarify whether there is fatty liver and whether fatty liver is related to alcohol consumption, and should exclude fatty liver caused by virus, drugs or other reasons. 2. A history of alcohol consumption is an essential diagnostic basis for alcoholic fatty liver disease. Male patients can be considered to have alcoholic fatty liver disease if they have consumed more than or equal to 40 grams of alcohol per day for more than 5 consecutive years and have fatty liver disease. Female patients can be considered to have alcoholic fatty liver if they have consumed more than or equal to 20 grams of alcohol per day for more than 5 consecutive years and have fatty liver. 3. Alcoholic fatty liver disease can be considered if the patient develops fatty liver after drinking a large amount of alcohol within 2 weeks, and the equivalent amount of alcohol is more than 80 grams per day. Suspected alcoholic fatty liver must go to regular hospitals for diagnosis and treatment, and strictly follow the doctor’s instructions, otherwise the condition will be delayed.