Post-coronary artery bypass grafting precautions: I. Post-coronary artery bypass grafting rehabilitation exercises: Get out of bed as early as possible after surgery. This can minimize complications such as pulmonary atelectasis, pulmonary infection, lower extremity venous thrombosis, pulmonary embolism, gastrointestinal tract dysfunction, vegetative extension dysfunction and muscle atrophy. Because patients often have cardiac impairment and arrhythmia after heart surgery, the amount of post-surgical rehabilitation exercise should be measured. It is best to exercise within two months after surgery under the guidance of a physician. The rehabilitation exercise can help patients recover their cardiac function and general condition, help the healing of the incision, and control blood pressure, blood sugar and blood lipids. Second, the drug treatment after bypass surgery: After coronary artery bypass surgery, anti-platelet coagulation drugs should be applied for a long time to prevent the formation of thrombus in the transplanted blood vessels, reduce the viscosity of blood and improve microcirculation. Aspirin, 0.1 g once a day, and clopidogrel, 75 mg once a day, alone or simultaneously, are generally applied. The lipid-lowering drug simvastatin has the use of reducing intravascular lipid plaque formation and is recommended to be taken regularly. Third, post-bypass lifestyle improvement: 1, low sodium diet. 2.Low fat diet. 3, moderate intake of protein. 4.Eat more green vegetables and fresh fruits, which are good for the metabolism of the heart muscle, improve the function of the heart muscle and blood circulation, promote the excretion of cholesterol, and prevent the development of hypertension. 5, avoid eating foods that excite the nerves such as: alcohol, tobacco, tea and coffee, etc.