Abstract: The incidence rate of hypertension was increased significantly during last ten years This report is one of a series studies regarding the regarding the cardiovascular risk factors in Chengdu population in 1999～2000 Methods A cohort of 7288 residents of Chengdu were sampled in group, aged 18～80 years The demographic data of the inhibitants,physical and laboratory examinations were investigated Results Prevalence rate of hypertension in this population（adjusted with age and sex） was 15 5%（male 16 9%, female 13 9%）, the 1st stage hypertension （BP≥140/90,＜160/100） was 8 48%, second stage 25 5%, and third stage 1 4% \ Compared with the prevalence of hypertension（Chengdu） in 1979（6 4%） and in 1991（9 07%）, The prevalence rate of hypertension in this survey was increased by 2 4 and 1 7 folds separately,which can be translated that the absolute increases in hypertension patients were more than 140,000 in Chengdu down town The mean BP in this cohort of population was 113/75 mmHg, and increased with age The prevenlence of diabets, stroke and myocardial infarction in hypertensives were 3 06, 3 41 and 2 2 fold higher The awareness,therapeutic and control rates in this survey were 37 7%, 22 6%, 11 9%, respectively In the treated patients the drugs were as follow: calcium antagonists 26 2%（nifedipine 16 2%）, β blockers（10 7%）, ACE inhibitors（0 2%）, diuretics（2 7%）, others（65 4%） Conclusion In last two decades, the prevalence of hypertension in Chengdu was increased obviously It was associated with increasing of other risk factors, and with a low awareness,therapeutic, control rates