Hypertension is a high-risk factor for stroke, hypertension in China has a high incidence, low awareness rate, low control rate characteristics, the onset of factors are: 1, genetic: the role of genetic factors cause the onset of hypertension has been recognized, it is now generally accepted that genetics is an extremely strong determinant of adult hypertension, and environmental factors interacting with genetic susceptibility is also an important influence on adult hypertension. 2, weight: research shows that blood pressure and body weight between, hypertension and obesity significantly correlated. The prevalence is positively correlated with the degree of obesity and mental stress in the population, and negatively correlated with the level of physical activity. Research shows: 10Kg weight loss can make the systolic blood pressure drop 5-20mmHg. 3, diet electrolyte intake: excessive sodium intake can make blood pressure rise, while the diet has sufficient potassium, calcium, high-quality protein can prevent blood pressure rise. 4, smoking and alcohol consumption: smoking is recognized as an important risk factor for the occurrence of cardiovascular disease. The relative risk of coronary heart disease is 2 times higher in smokers than in nonsmokers, the risk of ischemic stroke is 1 times higher, the risk of cancer death is 45% higher, and the total risk of death is 21% higher. A small amount of alcohol has no acute effect on blood pressure, but there is a significant positive correlation between systolic blood pressure, diastolic blood pressure and alcohol consumption and the amount of alcohol consumed, indicating that alcohol is a factor associated with increased blood pressure. 5, contraceptive drugs: since the mid-1960s, oral contraceptives have been widely used around the world, virtually all women taking contraceptives have elevated blood pressure, and tend to increase with the time of taking them, of which women over 35 years of age are more likely to have elevated blood pressure from oral contraceptives than younger women, but blood pressure tends to fall to normal after discontinuation. 6, ethnicity and race: In China, the Tibetans in Lhasa have the highest prevalence, followed by the Mongolians in Ximeng, Inner Mongolia, while the Liangshan Yi people in Sichuan have the lowest prevalence. In terms of ethnicity, blood pressure and hypertension were higher and more common in black people of African origin than in whites living in similar environments. It has also been reported that the prevalence of hypertension is also very high in the Japanese population, especially in those living in the northern Honshu province. 7, psychosocial factors: epidemiological studies in China have found that the incidence of hypertension is higher in urban areas than in rural areas, and the incidence of hypertension is high in people engaged in occupations with high mental tension and mental labor. In developed countries, the incidence of hypertension is higher in people with low economic income and low literacy than in people with high economic income and literacy. It indicates that the life labor tension, harmful factors in the labor environment, psycho-spiritual factors, etc. play a role in the development of hypertension. 8, age and gender: the prevalence of hypertension is directly proportional to age, the prevalence of women before menopause is lower than that of men, and after menopause is higher than that of men.