Abstract: Objective To explore the prevalence of Alzheimer's disease(AD) and its influencing factors among community elderly people in Taiyuan city.Methods Totally 5 946 elderly people from nine communities in Taiyuan cityere selectedith cluster-sampling.The demography data and history of chronic diseaseere collectedith face-to-face interview or telephone survey.The χ² test and logistic regressionere adopted in the analyses.Results Of the elderly,290 had ADith a prevalence of 4.86%.The results of logistic regression revealed that the elder age(odds ratioOR=1.96,95% confidence intervalCI:1.70-2.28),hypertension(OR=1.86,95% CI:1.41-2.46),hyperglycemia(OR=2.66,95% CI:1.60-4.42),and diabetes(OR=2.78,95% CI:2.02-3.82)ere the risk factors of AD.Higher education (OR=0.75,95% CI:0.46-0.72),intellectualork(OR=0.50,95% CI:0.33-0.76),and married (OR=0.75,95% CI:0.750.99)ere the protective facors of AD.Conclusion The elder age,hypertension,hypertglycemia,diabetes,low er education,living alone,and manualorker are the risk factors for the incident of Alzheimer's disease.