Hypertension is the most important risk factor for cerebral hemorrhage and cerebral infarction. A study in China showed that the relative risk of stroke increased by 49% for every 10 mmHg increase in systolic blood pressure and 46% for every 5 mmHg increase in diastolic blood pressure after controlling for other risk factors. The results of a randomized controlled clinical trial of systolic hypertension in elderly Chinese showed a 58% reduction in stroke mortality in the antihypertensive treatment group compared with the placebo control group after 4 years of follow-up. 1. Risk factors leading to cerebrovascular disease Cerebrovascular disease can be caused by risk factors such as hypertension, diabetes mellitus, heart disease, hyperlipidemia, smoking, alcohol consumption, hyperhomocysteinemia, lack of physical activity and poor diet and nutrition. Because the disease involves more risk factors, complex etiology, difficult to control, once the onset of the central nervous system of the brain, untimely treatment can cause lifelong disability, so the disease has a high incidence, high disability rate. 2, the need for long-term effective prevention of cerebrovascular disease prevention begins with the exclusion of risk factors. Prevention of cerebrovascular disease is a long-term process, never to engage in surprise; in addition, it is best to prevent and treat cerebrovascular disease scientifically under the guidance of a professional physician, do not use some manufacturers to promote drugs, health products and instruments. People should master the four cornerstones of health, namely reasonable diet, moderate exercise, smoking and alcohol cessation, and psychological balance.