Colorectal polyps is the mucosa of various limitations, elevated lesions, according to the pathology, it can be divided into adenomatous polyps, hyperplastic polyps, juvenile polyps and inflammatory polyps etc. Adeno-matous polyps and colorectal cancer is most closely. There are "adenoma evolution for adenocarcinoma" rule; Removal of adenomatous polyps can reduce the incidence of colorectal cancer, however, non-adenomatous polyps can also be transformed into adenomatous polyps. Once diameter＞ 5 mm in colorectal polyps should be given parallel pathological examination. With the popularization of endoscopic application, endoscopic operation technology has constantly improved and the continuous development of new technology, so that endoscopic therapy as the preferred treatment for colorectal polyps is safety, effective, convenient and less invasive, but also there are some complications, the most common is bleeding, the occurrence rate of about 0.3%-0.6%; For handling of postpolypectomy bleeding is relatively difficult, taking necessary measures to prevent and reduce risk factors is very necessary. There is no unity of understanding of the related factors for postpolypectomy bleeding in domestic, also no normative prevention, treatment measures. Therefore, this article will make a research on postpolypectomy hemorrhage in recent years.%大肠息肉是指大肠黏膜的各种局限性、隆起性病变,从病理上可分为腺瘤性息肉、增生性息肉、幼年性息肉和炎症性息肉等,其中腺瘤性息肉和大肠癌关系最为密切,存在着“腺瘤一腺癌”的演变规律,因此,切除腺瘤性息肉可降低大肠癌的发生率,但非腺瘤性息肉也存在演变为腺瘤性息肉的风险,因此一旦发现直径＞5mm的大肠息肉,应给予切除并行病理检查.近年来,随着内镜应用的普及、内镜操作技术的不断改进和新技术的不断开发,使内镜下治疗成为大肠息肉的首选治疗方法,具有安全、有效、方便、创伤小的优点,但同时也存在一些并发症,其中最常见是出血,其发生率约为0.3％～0.6％.息肉切除术后出血的处理相对比较困难,因此采取必要的预防措施和减少危险因素是很必要的,国内对内镜下息肉切除术后出血的相关因素并未有统一的认识,亦未有规范的预防及治疗方法,为此,该文就近年来关于大肠息肉切除术后出血的研究进行综述.
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