Rectal polyps in children are mainly caused by bleeding polyps. When children grow rectal polyps, because the polyps are particularly rich in blood supply and grow particularly large, they can cause abdominal pain and blood in the stool in children. In clinical practice, it is found that long-term blood in the stool of children can cause anemia, malnutrition, growth retardation and other adverse effects, which will definitely affect children’s life and learning in all aspects. When polyps are found clinically, it is recommended to go to hospital as soon as possible for minimally invasive treatment under endoscopy, which has less impact on life and learning and can be discharged in 7 days of hospitalization. Therefore, parents should go to the hospital as soon as possible when they find a child with bleeding stool, because the earlier it is found, the less it affects the child.