Stroke is the scientific name for cerebral stroke, which is a sudden onset of cerebral blood circulation disorder. The clinical manifestations are sudden fainting, unconsciousness or sudden onset of distorted eyes and mouth, hemiplegia, strong tongue and speech, and mental retardation. Stroke includes ischemic stroke (transient ischemic attack, atherosclerotic thrombotic cerebral infarction, lacunar cerebral infarction, cerebral embolism), hemorrhagic stroke (cerebral hemorrhage, subarachnoid hemorrhage), hypertensive encephalopathy and vascular dementia. In 1987, a survey of 5.79 million people in 29 provinces and cities found that the prevalence of cerebrovascular disease in China was as high as 245.58/100,000, with a mortality rate of 77.15/100,000, and its incidence is still increasing in recent years, and it tends to occur in middle-aged and elderly people, and is one of the most important killers threatening human life and causing disability. Since the 1950s, infectious diseases have been effectively controlled, and the morbidity and mortality rates have decreased significantly. Some non-communicable diseases such as cardiovascular diseases, cerebrovascular diseases (mainly strokes), and malignant neoplasms have moved significantly forward in the sequence of human death causes, becoming the three major causes of death. According to the statistics of 57 countries by the VHO Collaborative Study Group on Cerebrovascular Diseases, cerebrovascular diseases were listed in the top three causes of death in 40 countries; the number of deaths caused by these diseases accounted for 11.3% of the total number of deaths in 57 countries. Before 1962, cerebrovascular disease accounted for the first cause of death in Japan, and after 1982, it accounted for the second; in the United States, Canada, Cuba and Barbados, it accounted for the third; in China’s urban population, it accounted for the first cause of death from 1975 to 1982, and after 1983, it accounted for the second cause of death, and the deaths caused by this disease accounted for about 2=% of the total number of urban deaths and about 16% of the total number of rural deaths. The disease is the second leading cause of death in 1983. As stroke is an important cause of death or disability for the elderly, the danger of stroke is becoming more and more prominent in the accelerating trend of aging population in the world and in China, therefore, the prevention and treatment of stroke has become an important issue in health work and has attracted more and more attention from the medical community, especially the neuroscience community at home and abroad. The etiology of stroke Cerebrovascular disease is a group of cerebrovascular circulatory disorders caused by various reasons, manifested as focal neurological deficits, even with impaired consciousness, because of its sudden onset is also called cerebrovascular accident or stroke. It is a disease with sudden fainting and unconsciousness, accompanied by distorted mouth and eyes, unfavorable speech, hemiplegia or sudden onset of hemiplegia without fainting as the main symptoms. Atherosclerosis, arterial changes in hypertension, wind heart disease, cardiogenic embolism, arteritis, hematological diseases, metabolic diseases, drug reactions, tumors, connective tissue diseases, etc. can cause or accompany the narrowing and occlusion of blood vessels in the brain, which can cause local ischemia in the brain or bleeding due to the rupture of blood vessels and cause stroke. Epidemiological investigations have shown that a number of factors are closely related to the occurrence of stroke and are considered to be causative factors of the disease, also known as risk factors. They are divided into two categories: those that cannot be interfered with, such as age, genes and heredity; and those that can be interfered with, and if these factors can be effectively intervened with, the morbidity and mortality of cerebrovascular disease can be significantly reduced. Risk factors for stroke include: age, genetics, hypertension, hypotension, heart disease, arrhythmia, fundus arteriosclerosis, diabetes, hyperlipidemia, smoking, alcohol consumption, obesity, oral contraceptives, dietary factors such as high salt, meat, high animal oil diet, drinking strong coffee and tea, and excessive physical activity, all of which are considered as risk factors for stroke.