Cardiac stents are mainly used for the treatment of coronary heart disease and are relatively common medical devices in cardiac interventions. At present, the main mainstream materials are nickel-titanium alloy or cobalt-chromium alloy. Generally speaking, most cardiac stents are implanted with drug-coated stents when the condition permits, while some special lesions or patients with higher risk of bleeding are implanted with bare stents, i.e., without drug-coated stents. Currently, bioresorbable stents are becoming available, and for some younger patients or those who do not expect to have alloy stents implanted, bioresorbable stents are also available, although they are still in clinical trials. After stent implantation, patients should take regular oral antiplatelet medication to prevent restenosis of the stent.