Cerebrovascular disease is one of the three leading diseases causing human death. 4.6 million individuals die because of cerebrovascular disease per year in the world. There is a high incidence of cerebrovascular disease in China. It is estimated that there are 6 million patients of cerebrovascular disease in residents. Every year 1.3 million residents are diagnosised with cerebrovascular disease, and 1 million patients of cerebrovascular disease die. Among the survivors, 75% of them get sequelas like hemiparalysis, and part of them lose the ability to work and live normally.