Flat polyps are usually a kind of colonic hyperplasia disease, the specific conditions need to go to the hospital for relevant examination. Flat polyps are usually caused by long-term chronic inflammatory stimulation, flat polyps usually have a wider base and a wider range, mainly distributed in the intestines, digestive tract and other places, usually found during colonoscopy. Symptoms of flat polyps are often manifested as increased frequency of bowel movements, blood in stool, diarrhea, abdominal pain, etc. If the size of flat polyps is less than 1cm, minimally invasive surgery is recommended under the guidance of the doctor, and if the flat polyps are large in size, the patient should go to the hospital to undergo mucosal dissection surgery and other treatments. It is recommended that patients should pay attention to a light diet during the treatment period and follow the doctor’s instructions, which will help the recovery of flat polyps.