The lifespan of a stent depends on whether or not there is restenosis after stenting. As long as there are no new blood clots blocking the stent, it is generally permanent. Stent therapy is commonly used in clinical interventions for stenosis or blockage of coronary blood vessels in the heart. Purely in terms of the stent itself, there is generally no expiration date for its use, and once placed, it can be used for a lifetime. In order to prolong the life span of a stent, attention should be paid to the following aspects. 1. Pay attention to a good lifestyle, low-fat diet, proper exercise, quit smoking and drinking, and take medications on time, such as antiplatelet drugs such as aspirin, clopidogrel, lipid-lowering drug atorvastatin and so on. Specific medications should be taken under the guidance of a doctor. 2. Actively control the primary disease, such as hypertension, coronary heart disease, diabetes, etc., so that blood pressure, blood lipids, blood glucose must be controlled to meet the standard, which is conducive to the control of coronary artery stenosis or thrombus blockage, prolonging the life of the stent. 3. Regular review, for after stenting, in addition to regular medication, need to regularly review the electrocardiogram, cardiac ultrasound, blood lipids, blood glucose, blood coagulation, liver and kidney function, etc., if necessary, adjust the drug dose or dosage form. After stenting, it is necessary to pay attention to whether restenosis occurs or not, and consult a doctor in time if discomfort occurs, and treat according to the doctor’s instructions.