Rectal polyps of 1.5 centimeters in children are usually necessary for treatment. It is currently believed that polyps smaller than 0.3 centimeters or less can be considered for continued observation and regular review without specific treatment. For those above 0.3 cm, further management is recommended. Generally, the vast majority of rectal polyps are benign, while rectal polyps of 1.5cm are relatively large and need to be dealt with, this treatment does not require open surgery, the polyp can be found under the colonoscope, and the polyp is lifted up the mucosa, and then set on the base of the trap device, and then resected with electrocautery, this is a minimally invasive treatment, will not have too much impact on the trauma. It is important to note that children with rectal polyps of 1.5 centimeters should be actively treated under the guidance of a doctor to prevent the polyp from continuing to grow and leading to the formation of an obstruction or the possibility of malignant changes.