Abstract: Objective To explore the prevalence and risk factors of hypertention among urban adult residents in Guangdong province and to provide information for prevention and control of hypertention.Methods A multi-stage randomized cluster sampling method was used to select the participants.Data on socio-economic status and health status were collected with a face-to-face questionnaire surrey,physical examination,and laboratory tests.Results Among the 4 800 residents aged≥6 years selected from urban areas of 5 cities,the crude prevalence rate of hypertention was 12.3%(11.1% for the males and 14.0% for the females,respectively).The results of logistic regression analysis showed that major risk factors of hypertention were at the age of ≥50 years,with the waistline of ≥80cm,overweight,obesity,diabetes,high serum cholesterol,and family history of hypentension.Conclusion The prevalence of hypertention showes an increasing trend compared to that in 2002 and controlling body mass index and decreasing serum cholesterol are important measures for hypertension prevention among urban residents of Guangdong province.