To understand the prevalence, incidences, epidemiological characteristics and the influencing factors of acute gastroenteritis among residents in Miyun District of Beijing, find out the monthly and annual incidences of acute gastroenteritis, and estimate the foodborne proportion to provide a reference for the prevention and control of food borne diseases.Methods Multistage random sampling was used to carry out a retrospective cross-sectional survey for 12 months. EpiData 3.02 software was used to double entry database, and the data were simulated and calculated by SPSS 20.0 software and @risk 5.5 software. Results The response rate was 99.05% in 1 664 respondents, acute gastroenteritis prevalence rate was 2.28% (95%CI:1.57%-3.00%), and annual incidence rate was 0.30 (95%CI:0.29-0.31) times per person per year. About 143.7 thousand residents had acute gastroenteritis each year with 30.30% of foodborne.Conclusion The acute gastroenteritis incidents among residents in Miyun District of Beijing was high, the number of patients was big, much of which was foodborne. Season, education level and family size were the risk factors for acute gastroenteritis. It's necessary to strengthen the monitoring of acute gastroenteritis, expand the scope of monitoring, carry out regular investigation in communities, increase the sample size appropriately to obtain more accurate and comprehensive survey data, and implement intervention measures and assessments.