This cross-sectional survey was conducted among 369 older people rondamly selected in some sampling stages from communities of Ba Vi district, Hanoi in order to (i) identify proportion of older people exposured to affected factors of COPD well documented in literature, (ii) estimate prevalence of COPD by these affected factors; and (iii) identify risk fctors of having COPD among older people in a rural area of our country.