Secondary stenting procedures generally have no effect on people. Surgical stenting is a mature and minimally invasive procedure with a relatively low probability of complications, and is still very safe. Stent implantation can prevent the formation of vessel wall entrapment and improve the internal diameter of occluded and stenotic vessels. After stent implantation, it is necessary to control the long-term use of antiplatelet, lipid-modulating drugs, nitrates, control blood glucose, blood pressure, weight loss, smoking cessation and alcohol restriction, etc., in order to avoid in-stent restenosis. Complications of stenting, such as bleeding at the puncture site, contrast allergy, and contrast nephropathy, may cause arteriovenous fistula, air embolism, and thrombosis. Also, the use of anticoagulant and antiplatelet drugs increases the risk of bleeding. However, the incidence of these risks is low, so patients can avoid excessive anxiety. Patients should go to the hospital for examination if there is any abnormality.