Abstract: ObjectiveTo investigate the prevalence rate of stroke and its risk factors among middle aged and elderly population in Mentougou district of Beijing.MethodsWith cluster sampling method,3 276 permanent residents aged 45 years and above from 18 villages of 6 towns were selected to have a physical examination,Color Doppler ultrasound examination and questionnaire survey.ResultsAmong the residents,the prevalence rate of stroke was 10.9%;the age-standardized prevalence rate of stroke was 11.2%;and the recurrence rate of stroke was 21.6%.As to the type of stroke,ischemic stroke accounted for 77.9% and hemorrhagic stroke 22.1% of all stroke.Multivariate logistic regression analysis showed that sitting over 5 hours per day,atrial fibrillation,diabetes,dyslipidemia,and hypertension were risk factors of stroke,with the odds ratios (ORs)of 1.550,1.098,1.428,1.734,and 2.726,respectively.ConclusionThe prevalence rate of stroke is high among elderly residents in Mentougou district and ischemic stroke is the main type.The elderly people who have features such as having a long sitting time every day,atrial fibrillation,with diabetes,dyslipidemia,and hypertension are more susceptible to stroke.