目的　探讨社区人群中肠易激综合征 (IBS)的症状学诊断标准的特异性情况。方法　在广东省社区人群关于IBS的整群、分层和随机抽样的调查中 ,共收集到 2 39例符合RomeⅡ标准及 4 79例符合Manning诊断标准的IBS症状人群。在这些IBS症状人群中 ,按其性别、年龄、城乡分布、症状的 Objective To investigate the specificity of the diagnostic criteria of symptomatic patients with irritable bowel syndrome (IBS) in community population. Methods A total of 299 IBS symptomatic individuals who met Rome Ⅱ criteria and 4 79 patients who met Manning criteria were enrolled in the survey of cluster, stratification and random sampling of IBS in Guangdong community. In these IBS symptoms of the crowd, according to their gender, age, urban and rural distribution, symptoms