Patients with intracoronary stent implants are very concerned about how long the stent will last. Intracoronary stent implantation technology has a history of nearly 20 years so far, and implantation of drug stents has a history of nearly 10 years, so it is actually unclear how many years a stent can maintain its role. However, after the coronary stent is implanted in the body, it is usually completely covered by the intima within 1 year and becomes part of the normal blood vessel. Some patients may have a recurrence of stent restenosis after 1 year, which is why doctors recommend that patients have their coronary angiograms reviewed about 1 year after stenting. In addition, even if the angiogram is normal after 1 year, it does not mean that the patient will not get coronary artery disease again, because the atherosclerosis that causes coronary artery disease is still progressing, and new lesions may occur in other vascular areas. In order to maintain the long-term effect after stenting and to prevent other neovascularization, the patient should change the risk factors of coronary heart disease, such as blood pressure, weight, smoking cessation, and other poor lifestyles.