During the treatment with heparin, if abnormal liver function indicators are found, liver protection drugs can be taken. Heparin is used for the prevention of thrombosis or embolic diseases, as well as diffuse intravascular coagulation caused by various reasons. The use of the process may lead to liver injury, causing elevation of aminotransferases, etc. In this case, appropriate use of liver-protecting drugs may be prescribed by the doctor, or the dose of heparin may be appropriately discontinued or adjusted. During the use of heparin, adverse reactions such as nausea, vomiting, bleeding and urticaria may occur. Heparin is contraindicated in those who are allergic to heparin, those who have a tendency to spontaneous bleeding, those with delayed blood clotting, and those with ulcer disease. Coagulation time should be monitored regularly during the use of the drug. Adverse reactions and contraindications to liver protection tablets are not clear, and there are no other precautions for their use. Note that the drug should be used under the guidance of a doctor, avoid unauthorized use of the drug to avoid adverse effects. If the patient during the use of heparin, the emergence of shock and other critical symptoms, should promptly stop the drug, immediately seek medical attention, improve the relevant examination, clarify the cause of the disease, and symptomatic treatment.