The difference between cerebral insufficiency and hypertension are two different diseases: 1. Cerebral insufficiency is mainly manifested by the sudden appearance of focal neurological symptoms and signs, lasting from a few minutes to a few hours, with complete recovery within 24 hours, while hypertension is mainly manifested by high pressure persistently greater than 140 mmHg and low pressure persistently greater than 90 mmHg, usually requiring oral antihypertensive drugs to maintain it in the normal range. The blood pressure of cerebral insufficiency may be normal or elevated. 2, the two methods of diagnosis are different, in addition to the clinical manifestations, cerebral insufficiency examination, mainly need to improve the examination of the blood vessels of the head and neck, its purpose is to clarify the presence of vascular stenosis, while the diagnosis of hypertension is mainly through the measurement of blood pressure its value to be diagnosed.