If the stent implantation surgery after taking clopidogrel bleeding can generally stop about a week, but the specific length of time to stop the drug should be based on the patient’s bleeding volume, bleeding site, coagulation and other aspects of a comprehensive decision. Stent implantation is a foreign body into the blood vessel, easy to damage the blood vessel endothelial cells, platelets are easy to gather here and then thrombus blockage of blood vessels, thrombus dislodgement is prone to pulmonary embolism and life-threatening. Therefore, after stent implantation, clopidogrel is usually used routinely to inhibit platelet aggregation and prevent thrombosis, and is usually used for about one year. Clopidogrel is a drug that inhibits platelet aggregation, which can prevent cardiovascular and cerebrovascular disease due to platelet aggregation, and the risk of bleeding is generally less than that of aspirin. If bleeding occurs, it should be treated promptly according to the site of bleeding and the amount of bleeding, such as bleeding from the gums or a small amount of bleeding from the gastrointestinal tract, stop the medication immediately and look for the cause of bleeding. Bleeding from taking clopidogrel after stent implantation should be stopped immediately, and at the same time, the coagulation function should be checked, and the length of discontinuation should be decided according to the patient’s specific situation, and the patient should follow the doctor’s instructions to avoid the risk.