Some patients may have abnormal bowel movements, including diarrhea or blood in the stool or even unformed stool, and the ulcer surface may be obvious on colonoscopy. Patients with intestinal polyps may have localized pain, which can be removed by colonoscopy if necessary. In general, patients should pay attention to stay away from fatty foods, eat more fiber-rich foods, and patients with obvious family genetic predisposition should undergo colonoscopy once a year, and multiple polyps need to be further treated by surgery if necessary, usually by partial resection of the intestinal canal, and postoperative care should be taken to prevent infection.