Heart bypass generally has no effect on life expectancy, but it should be analyzed according to the individual’s physical and mental state. Heart bypass refers to the establishment of a channel between the distal and proximal ends of the narrowed coronary arteries, which can make the blood bypass the narrowed part, so as to reach the distal end of the surgery, which is mostly used for the treatment of coronary heart disease, coronary artery injury, etc. After the operation, some nitrate drugs are used appropriately for the expansion of blood vessels and improvement of the blood supply. In the postoperative period, keep a good state of mind, consume more fresh vegetables and fruits, food with higher protein content, quit smoking and drinking, then there is almost no threat to the life expectancy, if the postoperative care is not good, and the psychological state is poor, and the diet is not proper, then it will shorten the life expectancy. It is recommended to keep a good attitude, actively cooperate with the doctor’s treatment, pay attention to their diet in their normal life, if there are symptoms of physical discomfort, they should go to the hospital in time to consult the physician’s guidance.