Cerebral ischemic diseases are common and prevalent, with high rates of disability and death, and are the third leading cause of death in humans, and a major factor in adult disability. Various cerebrovascular diseases are a chronic process before the acute onset, once the acute onset is called stroke. Stroke is divided into hemorrhagic stroke and ischemic stroke, and hemorrhagic stroke includes cerebral hemorrhage and subarachnoid hemorrhage. Ischemic strokes are caused by various causes of cerebral ischemia. Ischemic strokes account for more than 80% of all strokes. Intracranial artery stenosis is an important cause of ischemic stroke. Intracranial artery stenosis has a higher risk of stroke or death because the hemodynamic severity of intracranial artery stenosis is significantly higher than that of extracranial artery stenosis. With the continuous development of endovascular interventions, scholars at home and abroad have been trying to apply interventional techniques for the treatment of atherosclerotic stenosis of intracranial arteries since the 1980s. 1999 Mori et al. reported the first case of intracranial stenting for intracranial artery stenosis. Our department was also the first medical unit in China to report the successful placement of intracranial artery stents. Due to the advantages of safe, reliable, less invasive and positive efficacy of endovascular intervention, it has now become an important method for the treatment of intracranial artery stenosis. Carotid artery stenosis is an independent risk factor for ischemic cerebrovascular disease, and its main cause is atherosclerosis. Due to the altered hemodynamics of the carotid bifurcation and the beginning segment of the internal carotid artery, lipid components in the blood are easily deposited in these areas, resulting in thickening of the intima of the artery and plaque formation, causing carotid stenosis. Carotid artery stenosis has a high incidence and can cause cerebral insufficiency, or more seriously, plaque dislodgement can cause cerebral infarction and lead to serious consequences. Interventional treatment involves placing a stent in the stenosis to improve the blood supply to the brain and to fix the plaque to prevent it from dislodging, thus reducing the incidence of strokes. Carotid stenting versus surgical carotid endarterectomy is currently the subject of seven randomized controlled studies internationally, with preliminary results showing no significant difference in efficacy between the two. However, the incidence of nerve injury was 0 for carotid stenting, which was significantly better than for those with endarterectomy. Pre-interventional angiography showed >95% stenosis at the beginning of the internal carotid artery with ulceration, and after stenting, the internal carotid artery opened well and had good blood flow.