目的　总结缺血性结肠炎的内镜下及临床特点 ,探讨其早期诊断方法。方法　收集分析我院近十年来确诊的 2 0例缺血性结肠炎的相关资料 ,所有病例均于初诊或再次就诊时行全结肠镜及病理检查 ,并于首次检查后 2周至 2个月内复查全结肠镜 ,观察其内镜下表现及临床病理特点。结果　主要表现为腹痛、腹泻、血便 ,大多表现为左下腹疼痛及左下腹压痛 ,临床确诊率 35 % ,内镜下病变与正常肠段之间有明显的界限 ,病变粘膜充血、糜烂、出血甚或纵行或匐行浅溃疡。一过性炎症者 18例 ,狭窄型 2例 ,未见坏疽型 ,内镜确诊率 90 % ,病理学检查多无特异性。结论　结肠镜检查是缺血性结肠炎早期诊断的重要手段。 Objective To summarize the endoscopic and clinical features of ischemic colitis and explore its early diagnosis. Methods The data of 20 cases of ischemic colitis diagnosed in our hospital in recent ten years were collected and analyzed. All patients underwent colonoscopy and pathological examination at the time of first visit or re-visit, and within 2 weeks to 2 months after the first inspection Review colonoscopy to observe its endoscopic findings and clinicopathological features. The results mainly manifested as abdominal pain, diarrhea, bloody stools, mostly manifested as left lower quadrant pain and left lower quadrant tenderness, the clinical diagnosis rate of 35%, endoscopic lesions and normal bowel obvious boundaries between the lesion mucosal congestion, erosion, bleeding or even Longitudinal or creeping shallow ulcers. A transient inflammation in 18 cases, 2 cases of stenosis, no gangrenous type, endoscopic diagnosis rate of 90%, and more non-specific pathological examination. Conclusion Colonoscopy is an important means of early diagnosis of ischemic colitis.