The main complication of hypertension in China is stroke (i.e., stroke), and hypertension is considered to be the primary risk factor for stroke. The occurrence and prognosis of stroke are closely related to the degree of hypertension and its duration. The common types of strokes caused by hypertensive disorders are cerebral hemorrhage, cerebral infarction and hypertensive encephalopathy. Hypertensive disorders are the main cause of cerebral hemorrhage. The incidence of cerebral hemorrhage in patients with hypertension is 3 to 4 times higher than that in normotensive individuals. Therefore, it is important to maintain normal or near-normal blood pressure values to prevent the occurrence of cerebral hemorrhage. In addition, hypertension aggravates systemic atherosclerosis of small arteries and atherosclerosis of cerebral vessels, which can easily cause blood clots in blood vessels; hypertension increases the risk of cerebral infarction by 2-6 times, and death and disability caused by cerebral infarction are the main diseases of hypertensive patients in China. Cerebral infarction is prone to occur not only in patients with high diastolic blood pressure, but also in those with high systolic blood pressure, especially in elderly patients with pure systolic hypertension. The more severe the degree of hypertension, the higher the incidence of cerebral infarction. Therefore, it is possible to prevent cerebral infarction by treating hypertensive disease as early as possible to control the occurrence and development of cerebral atherosclerosis. Finally, hypertensive encephalopathy it is caused by a sharp rise in momentary blood pressure, which causes strong spasm of cerebral blood vessels. It may show symptoms such as increased intracranial pressure, cerebral edema and cerebral hemorrhage. We must pay full attention to the clinical symptoms of hypertensive disease, check blood pressure frequently or regularly, take non-drug or drug and other methods of treatment, and effectively control blood pressure, it can reduce the incidence of cardiovascular and cerebrovascular disease by about 50%.