Elevated aminotransferases in pregnant women may be physiologic or caused by liver damage due to hepatitis, biliary tract diseases and other conditions. 1. Physiological elevation: Hormonal changes in the body after pregnancy and early pregnancy reaction leading to vomiting can lead to elevation of aminotransferases. Physiological increase generally does not need to be treated, and most of them can return to normal by themselves. 2. Pathologic increase: mainly due to diseases, such as hepatitis, biliary tract diseases and so on. (1) Hepatitis: such as viral hepatitis, is due to hepatitis virus infection caused by liver damage, can lead to transaminase elevation, but also accompanied by nausea, vomiting, jaundice and so on. Those who are clearly infected with hepatitis B should follow the doctor’s instructions to receive vaccination to block fetal infection, as well as with vitamin B, vitamin E and other drugs to protect the liver. (2) Biliary tract diseases: for example, bile duct stones, bile duct tumors, etc., will lead to bile can not be excreted normally and cause liver cell damage, which will lead to transaminase elevation. Elevated aminotransferases are also seen in pregnant women for other reasons, which should be promptly examined in the hospital and reasonable treatment measures should be taken under the doctor’s guidance.