大肠息肉为下消化道常见多发病。既往多采取手术疗法，随着肠镜外科的广泛开展，大肠息肉电凝电切术已成为首选治疗方法，不仅使许多患者免于手术治疗，而且随着癌前病变——腺癌性息肉的早期摘除，有助于降低大肠癌的发生率。对局限于息肉顶部的灶性原位癌亦可达到治疗目的。 Colon polyps are common diseases of the lower gastrointestinal tract. In the past, more surgical treatments were used. With the extensive development of colonoscopy surgery, colorectal polypectomy has become the preferred treatment method. It not only saves many patients from surgical treatment, but also precancerous lesions—adenocarcinoma-like polyps. Early removal can help reduce the incidence of colorectal cancer. Focal carcinoma in situ confined to the top of polyps can also achieve therapeutic goals.