小肠出血常是小肠疾病的首发症状之一。由于小肠位置特殊 ,位于消化道深处 ,且活动度大 ,迂曲重叠 ,临床上对小肠出血的病因诊断比较困难 ,尤其是少量出血。本院近年应用99ｍＴｃ红细胞核素显像 (ＥＣＴ)结合术中内窥镜检查。诊断小肠出血 5例 ,均获确诊 ,现报告如下 :1　临床 Small intestinal bleeding is often one of the first symptoms of small bowel disease. Due to the special position of the small intestine, located in the depths of the digestive tract, and the activity of large, tortuous overlap, the clinical diagnosis of etiology of intestinal bleeding is more difficult, especially a small amount of bleeding. In recent years, our hospital 99mTc erythrocyte imaging (ECT) combined with intraoperative endoscopy. Diagnosis of intestinal bleeding in 5 cases, were diagnosed, are as follows: 1 clinical