Carotid artery stenosis is a common cause of ischemic cerebrovascular disease. Carotid endarterectomy (CEA) is superior to pharmacological treatment in reducing the risk of stroke and was once considered the gold standard for the treatment of carotid artery stenosis. However, in the last 20 years, advances in interpositional technology and materials science, especially with the use and improvement of cerebral umbrellas, have made carotid artery stenting (CAS) an important treatment for carotid artery stenosis. Compared to carotid endarterectomy, carotid stenting has a broader range of indications. Carotid stenting is performed by simply placing a cerebral umbrella distal to the carotid stenosis under local anesthesia and then implanting a metal stent into the stenotic carotid artery to support the stenosis and allow blood flow. Thus, it is less invasive and quicker to recover, and can still be considered for patients who cannot tolerate carotid endarterectomy due to poor physical condition. Moreover, carotid stenting is free from the risk of nerve injury and local hematoma. Stenting can also be performed for those with restenosis after carotid endarterectomy, high carotid bifurcation sites, stenosis close to the skull base, and carotid stenosis after radiation therapy. Carotid artery stenting is a safe and effective treatment for carotid stenosis.