Hepatitis B antibody weak alanine aminotransferase 56 need to clarify whether the infection has hepatitis B. If it is caused by hepatitis B, it is necessary to anti-virus, liver protection; if it is not caused by hepatitis B, it is necessary to target the cause of the treatment. Hepatitis B antibody is divided into hepatitis B surface antibody, hepatitis B E antibody, hepatitis B core antibody, if hepatitis B five, only hepatitis B surface antibody is weakly positive, this situation is not hepatitis B, indicating that the elevated alanine aminotransferase is not caused by hepatitis B. It is necessary to further improve the examination in outpatient clinic to exclude fatty liver, autoimmune liver disease, etc., and target to give liver protection and other treatments. Among the hepatitis B antibodies, if the hepatitis B E antibody and hepatitis B core antibody are positive, it means that the patient may be infected with hepatitis B, and it is necessary to improve the hepatitis B viral load test. If the Hepatitis B viral load test is positive, it means that the patient is infected with Hepatitis B. The elevation of ALT is caused by Hepatitis B, and antiviral and hepatoprotective treatments are needed. If the Hepatitis B viral load is negative, it is not Hepatitis B and requires treatment for other causes.