There are no accurate statistics on how many years a person can live with a stent placed in the heart. Some patients who recover well can survive for a long time, while a few patients have a poorer prognosis and are at risk of sudden death. Stents are placed in the coronary arteries to improve the blood supply to the heart and are mainly used in the treatment of myocardial infarction. They can improve the blood and oxygen supply to the heart muscle, save the dying heart muscle, and thus save the patient’s life. If the patient has a single diseased vessel, after placing the stent, the patient recovers well, and insists on taking antiplatelet drugs such as Tegretol, aspirin, etc., and with the use of anti-atherosclerotic drugs such as atorvastatin, and pays attention to the regular checkups in the normal times, the patient can survive for a long period of time. If the patient has multiple stenosis and does not adhere to regular medication after the surgery, there is a possibility of thrombus reappearing in the stent, at which time the patient’s quality of life will be greatly affected, and there is a possibility of acute myocardial infarction resulting in sudden death. After placing a stent in the heart, patients should pay strict attention to their lifestyles and take medication regularly under the guidance of their doctors in order to improve their prognosis effectively.