Heart bypass surgery, also known as coronary artery bypass grafting, is an effective way to improve blood supply to the coronary arteries in patients with atherosclerotic stenosis of one or more of the coronary arteries. After coronary artery bypass grafting, the survival time of most patients can be prolonged to some extent, and life expectancy is usually not reduced as a result of the procedure. The patient’s life expectancy is related to the number of coronary artery lesions, the degree of stenosis, the functional status of the heart, as well as the patient’s postoperative physical condition and external environmental stimuli, and many other factors, and the length of the patient’s life cannot be judged based on the procedure alone. Of course, it is undeniable that coronary artery bypass grafting is a more traumatic and complicated operation, which itself involves certain risks, and patients who need bypass grafting are usually in serious condition, so there is a possibility of arterial hemorrhage, cardiac arrest and other dangerous situations that may lead to the patient’s life being affected during the operation. The possibility of intraoperative risks is gradually decreasing as medical technology and techniques continue to mature, and the procedure has gradually become one of the mainstays of treatment for coronary heart disease. Usually, after coronary artery bypass grafting, patients are advised to take antiplatelet drugs and plaque stabilizers as directed by their doctors. At the same time, good lifestyle habits, attention to rest, avoidance of smoking and alcohol, adjustment of diet, and control of blood pressure, blood sugar, lipids and other indicators, and appropriate participation in activities after full recovery, can effectively prolong the patient’s life cycle.