Dual-antiplatelet therapy refers to the use of two antiplatelet drugs, such as aspirin and clopidogrel, at the same time. The maximum duration of dual antiplatelet therapy with a stent is not precise and depends on the type of stent used. 1. Drug-coated stents: If a drug-coated stent is used and the patient has no obvious symptoms, then the dual-antibody medication should be continued for about 12 months. However, if the patient still has angina after the implantation of the stent, then the duration of the dual-antibody treatment should be extended appropriately, which is about 18 months, and the exact duration varies from person to person. 2. Bare metal stent: If a bare metal stent is used, then the dual-antibody medication needs to be used for about 3 months, but if the patient needs to undergo an emergency surgical procedure during this period, then the time can be shortened to about 1 month. During the treatment period, patients should strictly follow the doctor’s arrangement, do not self-medicate, and develop healthy diet and lifestyle habits, always pay attention to the monitoring of blood glucose, blood pressure and blood lipids, and regular review, so as not to aggravate the condition.