Elevated AST after chemotherapy is mostly caused by chemical stimulation of the liver or side effects of drugs, which can be improved by taking liver-protecting drugs and stopping chemotherapy. 1. Taking liver-protecting drugs: people with elevated AST after chemotherapy can take drugs such as silymarin and compound glycyrrhizin under the guidance of doctors, which can protect the liver and lower the enzyme better. 2. Stop chemotherapy: after chemotherapy, the situation may also be caused by the damage to the liver caused by chemotherapy drugs, if there is a significant increase in ALT, it is recommended that the patient under the guidance of the doctor to take to stop chemotherapy to improve the situation, and after the condition is stabilized, chemotherapy and other methods of control again. The patient should also go to the hospital in a timely manner. Patients should also go to the hospital in a timely manner, under the guidance of the doctor’s active treatment, the above drugs must be taken under the guidance of the doctor.