A 0.5 cm polyp in the ascending colon should be actively removed surgically. Polyps are generally divided into hyperplastic polyps, inflammatory polyps, juvenile polyps, and adenomatous polyps, which generally have the tendency to become malignant, so once found, they should be actively removed surgically. Especially in the ascending colon, the diameter of 0.5 cm is relatively large, and this kind of polyp needs to be removed endoscopically. If it has a small base and a long tip, it can be removed endoscopically and then local electrocautery to stop bleeding. If the base of the polyp is wide, sometimes transabdominal rectal polypectomy is required.