If intestinal polyps of 1-2cm in size are found during colonoscopy, it is recommended that they be removed under colonoscopic conditions and pathologically examined. Intestinal polyps can generally be subdivided into adenomatous polyps and non-adenomatous polyps according to the pathology. Non-adenomatous polyps mainly include inflammatory polyps, hyperplastic polyps, and misshapen polyps. Adenomatous polyps include tubular adenomas, villous adenomas, and tubular-villous adenomas. They are mainly caused by localized glandular hyperplasia in the intestinal mucosa and have a high chance of becoming cancerous, and are usually recommended to be removed as soon as possible. Some reports show that if the diameter of colonic adenomatous polyp exceeds 2cm, the malignancy rate reaches 50%. Therefore, if colonoscopy reveals intestinal polyps of 1-2cm in size, it is recommended that they be surgically removed and pathologically examined. If the result of pathological examination is no tumor cells, regular review can be done according to the doctor’s instruction; if tumor cells are found, anti-tumor related treatment should be given. Although the malignant rate of non-adenomatous polyps is low, it is difficult to determine whether they are malignant or not under the condition of colonoscopy, so they should be resected under the condition of colonoscopy directly and pathological examination should be carried out, and the treatment is the same as that of adenomatous polyps after examination. Although 1-2cm intestinal polyps are not too big, they can be resected under the condition of enteroscopy, because at this time of resection, the operation is relatively simple, with little damage and fast recovery. When intestinal polyps are found, they should also be reviewed regularly.