Increased blood flow in the cerebral blood vessels is commonly seen in two ways: first, due to vasospasm, which can be caused by poor rest, fatigue, or stress. The patient’s vasospasm can be reduced with rest or oral medications that improve vasospasm, such as flunarizine hydrochloride, nimodipine, or with fasudil and niacin. If the blood flow rate increases due to vasospasm, the patient will have headache and dizziness. Secondly, the increased blood flow rate of cerebral blood vessels can also be seen in blood vessel stenosis, which is mostly seen in the elderly. As a result of heavy arteriosclerosis, the lumen of the patient becomes narrower, and the same blood flow will increase in speed. At this time, the symptoms of limb function deficiency will appear in severe cases. It is suggested that patients can consult the neurology department if necessary, and according to the degree of stenosis, consider whether to take oral endothelial protection drugs, or further stenting or endothelial thrombolysis treatment.