[Basic overview] Intestinal polyps refer to bulging lesions on the surface of intestinal mucosa protruding into the intestinal lumen, and are classified into tubular adenoma, villous adenoma and tubular villous (mixed type) adenoma, adenomatous polyp (including papillary adenoma), misshapen polyp, and inflammatory polyp. They are closely related to colorectal cancer, and statistics show that 80% of colorectal cancers are evolved from colorectal adenomas. The cause of intestinal polyps is not very clear, it is due to human congenital genetic susceptibility to pathological factors, stimulated and induced by factors such as emotion, diet, inflammation, infection, and decreased immunity to form intestinal polyps. The early stage of the disease may not have any conscious symptoms, and the later stage is mainly with blood, mucus stool or constipation, abdominal pain, diarrhea as the common symptoms. 【Treatment】The first choice of treatment for intestinal polyps is endoscopic polypectomy. Different surgical methods are used according to the shape, size, number and presence of polyps, length and thickness, including high-frequency electrocoagulation capsulectomy, argon ion coagulation (APC), etc. For polyp lesions that are difficult to be removed endoscopically or suspected to be cancerous, surgical treatment is required. Preoperative preparation] To improve the relevant examination, sign the informed consent for treatment before surgery, and understand the purpose and complications of endoscopic polypectomy. Patients should have a dregs-free diet for 3 days before surgery and intestinal preparation in the early morning of the day of surgery, with 12 hours of fasting and 6 hours of water fasting. Postoperative treatment】Postoperative should be fasted water, can eat after should be gradually transition from liquid food, semi-liquid food, and keep the stool soft and fluent. After surgery, attention should be paid to rest and avoid strenuous exercise. Give rehydration and other medications, and closely observe the occurrence of bleeding, perforation, infection, such as fever, abdominal pain, blood in stool, etc. The endoscopy should be reviewed once in the first, sixth and twelfth months after surgery, and once a year for the next five years.