Objective To study the effects of health promotion on prevention and treatment for hypertension in urban population performed by a community hospital. Methods Typical sampling was used to select 318 subjects in a sub-district government office of Chongwen District in Beijing and a factory under jurisdiction of the city as intervention community. Comprehensive intervention for hypertension was performed at this community during July 2003 to December 2004. All the subjects were interviewed with questionnaire of knowledge of hypertension and its behavioral risk factors before and after intervention. The data were analyzed with SPSS version 11.0. Results Totally, 272 of 318 subjects responded after intervention. Awareness of prevention and treatment for hypertension in the subjects was compared before and after intervention. Awareness of the harm of high blood pressure in the subjects increased to 60 percent after intervention from 51 percent before it (P