Alanine aminotransferase 64U/L is on the high side, normal between 0-40U/L. It may be caused by pathologic causes or physiologic causes. 1. Physiological causes: In the case of heavy alcohol abuse or malnutrition, it is possible to cause a small amount of alanine amino acid to be transferred to the blood, thus leading to high alanine aminotransferase. Usually, no special treatment is needed, and the alanine aminotransferase value will return to normal when the physical condition returns to normal. 2. Pathological causes: when suffering from various viral hepatitis, toxic hepatocellular necrosis and other hepatobiliary diseases, it may lead to the release of alanine aminotransferase into the blood, so that the activity of the enzyme in the serum is obviously elevated. It is important to go to the hospital for review and treatment if liver disease is diagnosed. For example, viral hepatitis should be treated with antiviral drugs, such as acyclovir, as prescribed by the doctor. In case of high alanine aminotransferase value, it is necessary to consult the doctor in time to clarify the cause of the disease and take appropriate treatment, so as to avoid delaying the disease.