Normal value of alanine aminotransferase is less than 40U / L, 90U / L higher than twice the normal belong to more serious, should go to the hospital to find out the cause, the common causes of viral hepatitis, drug liver injury, cirrhosis, etc., such as hepatitis B should be taking entecavir antiviral therapy, drug liver to stop using liver injury drugs, etc.. 1. Viral hepatitis: the most common is viral hepatitis B, hepatocellular injury, resulting in elevated ghrelin, can take entecavir antiviral therapy, bisacodyl, magnesium isoglycyrrhizate and other liver protection therapy. 2. Pharmacological liver injury: for example, statin drugs, rifampicin and other anti-tuberculosis drugs are easy to damage the liver function, resulting in the rise of alanine aminotransferase, you should follow the doctor’s instructions to stop the liver drugs, give dicyclomol, diammonium glycyrrhizinate, reduced glutathione and other liver-protecting treatments. 3. Cirrhosis:The underlying liver disease should be actively treated, and liver-protecting drugs such as dicyclomol should be given to treat the complications such as ascites and splenomegaly. The symptoms of 90U/L ALT should be treated in the hospital, and the cause should be identified and treated under the doctor’s guidance, and the medicines should be used according to the doctor’s instructions.