Abstract: During pregnancy, most of autoimmune hepatitis (AIH) patients can maintain stable or even be relieved, but they are prone to have recurrence after delivery，and some of them may develop liver fibrosis, liver cirrhosis, and even hepatic coma.The occurrence rate of adverse pregnancy outcomes in AIH patients increased, such as premature birth, abortion and so on. AIH patients during pregnancy should continue to maintain prednisone treatment at a minimum dose according to the doctor’s guidance. AIH patients at pregnancy need to be closely followed up during pregnancy and postpartum by the obstetricians and hepatologists.