Heart bypass surgery refers to coronary artery bypass grafting, which is a larger surgery and a treatment for atherosclerotic coronary heart disease, which is a major disease. Coronary atherosclerotic heart disease itself is a more serious disease, causing symptoms such as chest pain, palpitations and breathlessness. If the disease progresses more seriously, there are multiple branches or severe coronary artery stenosis, it is necessary to take coronary artery bypass grafting and other means of treatment, the operation is more difficult, belongs to the scope of major diseases. Coronary artery bypass grafting can better improve the patient’s situation, but of course there are certain risks, such as causing bleeding, infection and other conditions. It is recommended that patients actively cooperate with doctors for treatment and strengthen post-operative care.