Colon polyps have a variety of forms, according to the Yamada typing colon polyps can be divided into 4 types, type I is relatively flat, type II and type III polyps upward bulging, type IV is a colon polyp with a tip, that is, the front end of the polyp is more dilated, the root of the polyp is relatively small. Different types of polyps may lead to different outcomes, with type IV polyps having the potential to become malignant, while type I or type II polyps are less likely to become malignant. The color of the polyp may be different, it may be the same color as the normal intestinal mucosa, or it may be dark and brown. When polyps are found in the colon, they should be removed actively under colonoscopy because they may become cancerous after a long period of time. If it is difficult to remove the polyps under colonoscopy, surgical removal can also be considered.