The length of life after heart bypass depends on the age of the patient and the severity of the disease, and cannot be generalized. The immediate and long-term results of coronary artery bypass surgery are good, with a 5-year survival rate of 90%, a 10-year survival rate of 80% or more, and a 15-year survival rate close to 80%. In clinical practice, the mortality rate of coronary artery bypass surgery is about 1%. If the patient is in good physical condition and does not have other diseases, the mortality rate after heart bypass can be less than 1%, which is important to improve the quality of life and prolong the life span. If the patient is elderly, the life expectancy can be shortened to 5-10 years due to other diseases after bypass surgery. Heart bypass patients should pay attention to rest, avoid overexertion, keep warm and keep a happy mood after surgery. In addition, they need to go to the hospital regularly for physical examination and review, and treat any problems in time.