Carotid artery stenosis is the cause of some strokes, which can be prevented by carotid endarterectomy, carotid stenting, and drug therapy. Pharmacological treatment is basic, including antiplatelet drugs, statins, control of hypertension and diabetes, and improvement of lifestyle; carotid endarterectomy is less commonly practiced in China; carotid stenting is widely practiced in China and has a good safety profile. International large-scale clinical studies have found that carotid endarterectomy and stenting have similar efficacy and safety, and in many cases they complement each other. However, some patients with high carotid artery stenosis experience dislodgement of plaque at the stenosis during stenting procedures, resulting in intraoperative strokes and leading to varying degrees of surgical complications, including paralysis and aphasia, or even coma, in the patients. In order to further minimize the risk of plaque dislodgement during carotid stenting and to reduce stenting complications, a new dual-protection technique has been adopted to perform carotid stenting for high-risk patients with high carotid artery stenosis. A combination of both balloon blockade proximal to the stenosis, and filter interception distal to the stenosis is mainly used. This dual protection further reduces plaque drift to distant cerebral vessels and reduces the occurrence of surgical complications; and the method is simple, reliable, and economical; it has been used by many patients and is safe and effective.