Abstract: @@ Hypertension has currently become a centennial epidemic and key public health problem in China. According to an investigation among 15 540 adults from 2000 to 2001 by Gu and co-workers,1 the prevalence of hypertension among people aged 35 to 74 years has reached 27.2%, ranking among the highest rates of hypertension in the world and putting the blood pressure (BP) of nearly 130 million Chinese adults above the normal level.