Aminotransferase 80u/L mostly represents hepatitis activity. There are very many causes of hepatitis activity, and the more common ones are as follows: i. Viral hepatitis, such as hepatitis A, hepatitis B, hepatitis C, hepatitis E or hepatitis caused by EBV infection or cytomegalovirus infection, so it is necessary to improve the relevant examination to be clear. Second, alcoholic hepatitis, seen in long-term alcohol consumption or a large number of alcoholic drinks in a short period of time. Third, steatohepatitis, ultrasound suggests fatty infiltration of the liver. Genetic metabolic diseases, such as hepatomegaly, hepatic glycogen accumulation disease, etc. V. Drug-related damage, such as those caused by oral anti-hyperthyroidism, anti-tumor drugs, etc. Sixth, other organ diseases, such as hyperthyroidism caused by liver damage. Seven, liver inflammation caused by prolonged late night, strain, and too strenuous activities such as long-distance running can cause hepatitis.