Gastrointestinal polyps mainly affect the digestive function, bleeding, malignant tendency and other hazards. 1. Affect the digestive function: gastrointestinal polyps may lead to indigestion, loss of appetite, diarrhea, constipation, etc. Polyps can also stimulate intestinal peristalsis to increase the number of bowel movements, stool frequency and change in character. Larger polyps that exist in the narrower parts of the digestive tract may lead to obstruction of the digestive tract, and may also be the cause of intestinal obstruction and volvulus. 2. Bleeding: polyps are generally rich in blood supply, and the passage of rougher food debris and feces in the gastrointestinal tract can lead to polyp bleeding, which is manifested as blood in the stool, occult blood, etc. Patients with prolonged bleeding may even develop anemia. 3. Malignant transformation: some polyps, especially adenomatous polyps, may become malignant and progress into gastric cancer and intestinal cancer. Therefore, patients with polyps need regular gastroenteroscopy and biopsy of polyps if necessary. It is recommended that patients with gastrointestinal polyps pay attention to them, consult a doctor in a timely manner, and follow the doctor’s instructions for further examination and treatment.