Under normal circumstances, the life expectancy of heart valve replacement can be extended by 30-40 years, but this mainly depends on many factors. 1, the best period of surgery: for mitral valve, tricuspid valve, aortic valve, pulmonary valve have different best period of surgery, if the timing of surgery is good for postoperative recovery has great benefits, but if the surgery is too late the situation is not good. 2, the patient’s own situation: the patient’s physical condition before surgery 3, postoperative care: postoperative medication, infection prevention, appropriate activities, emotional stability, diet, regular review, etc., care has a certain impact on the life expectancy after valve replacement. So the best period of surgery, healthy physical condition before surgery, and strict postoperative care help patients’ life expectancy after valve replacement to be the same as normal people. If all of these conditions are poor, the patient’s life can be compromised.