Transaminase is one of the important enzymes in liver cells and is an important indicator of changes in liver function. An aminotransferase of more than 150u/L is clinically considered to be moderate liver damage, which should be more severe. Moderate liver injury indicates that the liver has been invaded and the number of hepatocytes damaged is high, which is an indication for clinical hospitalization. For mild liver injury, oral liver-protective medications and cause-specific treatment can be applied. Moderate liver injury requires hospitalization with injectable hepatoprotective drugs. If the aminotransferases are further elevated and the liver injury becomes severe or liver failure is reached. The clinical treatment will be relatively complex, and this condition may lead to the death of the patient.