Rectal polyps are tumor-like objects formed by limited proliferation of rectal mucosa or submucosal glands, covered by mucosa on the surface and generally soft. Smaller ones may appear as tiny elevations on the mucosa, while larger ones may be larger and tipped tumors, which may protrude into the intestinal cavity and move up and down in the intestinal cavity, and may come out of the anus when located in the lower part of the rectum. There are single and multiple polyps, and single polyps are common in children aged 5-10 years. Adults with polyps, especially solitary polyps, can become malignant, so this disease is an important pathological basis for rectal cancer. The disease is mostly hereditary.