Children’s buttock pain may be caused by anal fissure, perianal abscess, trauma and other reasons. 1. Anal fissure: if children usually do not pay attention to drinking water, or consume too few vegetables and fruits, etc., resulting in slowing down of gastrointestinal peristalsis, feces accumulation in the intestinal tract, resulting in constipation, which may cause anal fissure, resulting in children’s buttock pain. 2. Perianal abscess: it is mostly due to the infection of anal crypt, the pathogenic bacteria spread along the anal glands and lymphatic vessels to the perianal rectal space, resulting in the formation of perianal abscess, which leads to the emergence of children’s pain in the buttocks. 3. Trauma: If the child has a history of falling or falling, and the buttocks hit the ground first, it may cause damage to the soft tissues in the buttocks area, which may lead to the emergence of pain in the buttocks of children. Children’s pain in the buttocks may also be caused by other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, give targeted treatment or standardized treatment.