目的评价缺血性结肠炎（ IC）患者的临床特征及内镜表现。方法对 23例 IC患者的临床症状、体征、实验室及内镜检查资料进行回顾性分析。结果缺血性结肠炎好发于中老年人，主要临床表现是急性下腹痛以及便血。有相关基础疾病的患者占 52％，另 48％无明确诱因。内镜检查提示病变主要发生在左半结肠，呈节段性分布，结肠粘膜充血、糜烂坏死及粘膜下出血。内镜分型多数为非坏疽性一过型（ 91％），慢性型占 9％，未发现坏疽性 IC。结论中老年患者出现急性下腹痛和血便时应警惕 IC的可能，及早内镜检查是明确诊断、了解病变范围及程度、判断预后的主要手段。 Objective To evaluate the clinical features and endoscopic findings in patients with ischemic colitis (IC). Methods The clinical symptoms, signs, laboratory and endoscopic findings of 23 IC patients were analyzed retrospectively. The results of ischemic colitis occur in the elderly, the main clinical manifestations of acute lower abdominal pain and blood in the stool. Patients with underlying underlying diseases accounted for 52%, while the other 48% had no clear incentive. Endoscopic examination revealed lesions mainly in the left colon, was segmental distribution, colonic mucosal hyperemia, erosion and necrosis and submucosal hemorrhage. The majority of endoscopic types were non-gangrenous type (91%), chronic type accounted for 9%, no gangrenous IC was found. Conclusion Middle-aged and elderly patients with acute lower abdominal pain and bloody stool should be alert to the possibility of IC, early endoscopy is a clear diagnosis, understanding the extent and extent of the lesion, the main means to determine the prognosis.