Mild to moderate stenosis of some branches of the cerebrovascular system at the age of 60 needs to be determined according to the location of the stenosis to determine whether it is serious or not. If the stenosis is a large branch stenosis it is generally serious, and if it is a small terminal stenosis it is not so serious. 1. If it is a large branch stenosis, for example, the lesion location is the upper and lower trunk of the middle cerebral artery, or the ophthalmic artery which is a branch of the internal carotid artery, if the stenosis increases, vascular occlusion may occur, causing limb paralysis, blindness and other serious clinical symptoms. 2. If the stenosis is a small branch, it may be caused by the glassy change of small arteries due to high blood pressure and other reasons, resulting in the stenosis, and most of the clinical symptoms are mild after the occlusion. Cerebrovascular branch stenosis of mild to moderate degree, should be based on the specific location to determine the risk of the disease, and under the guidance of the doctor to determine the treatment program, such as drug therapy or interventional stenting.