Generally, stent placement is required for cerebral artery stenosis of more than 70%, or up to about 50% but with significant symptoms. Cerebral artery stenosis is categorized into different degrees, generally less than 50% is considered mild stenosis, 50% to 69% is considered moderate stenosis, and 70% to 99% is considered severe stenosis. Often, stenosis of 70% or more requires consideration of surgical intervention, such as placing a stent inside the blood vessel to widen the vessel, often referred to as intracranial artery stenting. If the stenosis is around 50% and there are no obvious symptoms, stent placement is usually not necessary. At this point, the patient can take medication to keep the stenosis stable. However, if there are obvious symptoms, such as dizziness and limb weakness, they can also be treated with stenting. The key to the treatment of ischemic cerebrovascular disease due to cerebral stenosis is early diagnosis and early intervention. When cerebral artery stenosis is detected, it is necessary to go to the hospital in time for consultation and targeted treatment under the guidance of specialized physicians.