The treatments for coronary artery disease include three types: medication, percutaneous transluminal coronary artery endoluminal angioplasty and endostenting, and surgery. Coronary artery bypass grafting, as one of the main treatments for coronary artery disease, is safe and effective, and the success rate of surgery is over 98%. Surgery not only relieves angina pectoris, greatly reduces the occurrence of myocardial infarction, arrhythmia, and sudden death, but also greatly improves the quality of life and the ability to move around. A large number of case studies at home and abroad have proved that the surgical treatment of the following patients with coronary heart disease is better than other therapies, and it is advisable to undergo surgery as early as possible: 1, severe angina pectoris, especially unstable angina. 2, the main trunk of the left coronary artery. 2, left coronary artery trunk stenosis of more than 50%. 3, more than 50% stenosis of two or more coronary arteries, including the left anterior descending branch. Failure of interventional therapy, restenosis after interventional therapy, or serious complications of interventional therapy. 5, Ventricular wall tumor formation after myocardial infarction, especially the diameter of ventricular wall tumor is more than 5 cm, accompanied by angina pectoris, intractable ventricular arrhythmia, embolism, cardiac insufficiency. 6.Ventricular septal perforation caused by myocardial infarction. 7, Mitral valve closure insufficiency of more than moderate degree caused by myocardial ischemia.