Abstract: ObjectiveTo investigate epidemic characteristics and risk factors of hypertension among residents aged 35-74 years in Henan province.MethodsWith multi-stage cluster random sampling,according to a 4:6 ratio of urban:rural area based on economic geography,a questionnaire survey was conducted in conjunction with the measurements of body height and weight and blood pressure among 9 983 inhabitants aged 35-74 years.Multivariate unconditional regression model was employed to analyze the influence factors of hypertension.ResultsThe prevalence rate of hypertension in the residents was 39.7%and the standardized prevalence rate was 40.1%.The standardized rates of male,female,urban and rural populations were 41.5%,41.4%,39.2%,and 40.1%,respectively.No significant differences were found in the standard rates of hypertension between male and female or the urban and rural residents(u≤1.45,P>0.05).With the increment of age,the hypertension prevalence rate of all residents,male,and female were obviously elevated.The results of logistic regresssion showed that the risk factors of hypertension were age,gender,educational level,marital status,smoking,central obesity and body mass index.ConclusionThe results indicated that hypertension was highly prevalent in Henan province and the unhealthy living style and obesity were the major risk factors.