There are more reasons for multiple intestinal polyps, which can be summarized as follows: 1, familial intestinal polyposis or multiple adenomatous polyposis, related to genetic factors; 2, inflammatory multiple intestinal polyps and chronic inflammation of the intestine can cause inflammatory hyperplasia, which leads to the appearance of inflammatory polyps. Colonoscopy is needed to take pathological biopsy to clarify the nature of polyps. In case of familial intestinal polyposis, there is a clear genetic relationship and early microscopic polyp removal is recommended. Immediate family members should review colonoscopy, and patients should review colonoscopy every six months to a year to be alert to the occurrence of colon cancer. Inflammatory bowel polyps suggest that long-term oral intestinal probiotics can be taken to regulate intestinal flora and reduce the recurrence and occurrence of inflammatory polyps. If adenomatous polyps are found, they need to be removed in time. Because adenomatous polyps may become cancerous and need to be vigilant, middle-aged people over 40 years old need to review colonoscopy regularly, preferably every 1 to 2 years. If polyps appear, they should be treated as early as possible.