It is not true that high alanine aminotransferase is fatty liver. High alanine aminotransferase can be caused by fatty liver, non-disease factors, viral hepatitis, cirrhosis and other diseases. Albuminous aminotransferase is a commonly used indicator in liver function tests, which can determine whether liver function is impaired, and its elevation can be seen in non-disease factors such as prolonged late-night work, exertion, and late-pregnant women; it can also be seen in cirrhosis, liver cancer, viral hepatitis, fatty liver, cholangitis and other liver and gallbladder diseases, dermatomyositis and other skeletal muscle diseases, as well as pulmonary infarction, pancreatitis, and so on. Therefore, it is not true that high ALT is fatty liver; high ALT may be caused by fatty liver or other factors. It is recommended to go to the hospital and ask the doctor to make a judgment when there is an elevated alanine aminotransferase.