Cerebrovascular disease is a common disease that poses a serious threat to human health. It can occur in children, young people or middle-aged and elderly people. It has the characteristics of high morbidity, high mortality, high disability and many complications. For these characteristics, experts from Sanbo Brain Hospital of Capital Medical University bring the following knowledge: 1. High morbidity rate: Morbidity rate refers to the frequency of new cases in 100,000 people in a year. The world average annual incidence rate of cerebrovascular disease is 200/100,000. The highest is Japan, where 200 people in every 100,000 people have cerebrovascular disease each year, and the average annual incidence rate across China is 219/100,000. Cerebrovascular disease is reported to occur in more than 2 million people each year in China. The disease mainly occurs in middle-aged and elderly people, and its incidence tends to increase with age starting from age 50. As the aging of our population continues to increase, the proportion of elderly people grows year by year, and the incidence of cerebrovascular disease will become higher and higher. 2.Mortality rate: Mortality rate refers to the number of deaths per 100,000 population in a certain place in a certain year. The mortality rate of cerebrovascular disease is above and below 100/100,000. According to the statistics of 57 countries by the World Health Organization, cerebrovascular disease is listed as the top three causes of death in 40 countries. The mortality rate of cerebrovascular disease in China is 116/100,000, accounting for the second highest of all causes of death. It is projected that about 1 million people die from cerebrovascular disease in China every year, and the mortality rate of cerebrovascular disease is about 45%. Moreover, the mortality rate of cerebrovascular disease increases with age, and the mortality rate of cerebrovascular disease increases about 1 times for every 5 years of age. In addition, almost half of the survivors of cerebrovascular disease die within 3-10 years. If a second recurrence occurs, the mortality rate is higher than the first. 3, high disability rate: a large amount of information shows that 50%-80% of those who survive cerebrovascular disease after rescue are left with varying degrees of disabling sequelae, such as hemiplegia, slurred speech, mental retardation; joint stiffness, contractures, etc., and even dementia. About three-fourths of the patients lose their working ability, 16% are bedridden or hospitalized for a long time, and two-thirds need help to take care of their lives. The sequelae of cerebrovascular disease not only bring pain to the patients themselves, but also bring pressure and burden to the family and society. 4, high recurrence rate: According to statistics, cerebrovascular disease survived by rescue treatment, there is a recurrence rate of 20%-47% within 5 years, and the most recurrence within 1 year. If the control of hypertension, treatment of heart disease, treatment of cerebral atherosclerosis and prevention of other triggering factors are neglected, the possibility of recurrence of cerebrovascular disease is greater, which deserves special attention. 5.Many complications: Because of the low resistance of patients with cerebrovascular disease sequelae, they are prone to various complications, such as pneumonia, urinary tract infection, pressure sores, etc., which threaten the lives of patients at any time.