The causes of abdominal pain in children are many and complex, including the following reasons: 1, it may be functional pain, including gastrointestinal dysfunction or due to eating too cold, too hot, too acidic, stimulating food, resulting in spasmodic pain in the gastrointestinal tract, which is clinically more common benign abdominal pain. 2, there may be inflammatory diseases, including acute and chronic gastroenteritis or appendicitis, which can lead to abdominal pain. Children are prone to mesenteric lymphadenitis when they are small, which is also the main cause of abdominal pain.3, there may be organic lesions of the intestinal tract, including intestinal obstruction, intussusception, and intestinal malformation, internal hernia, etc., are common causes of abdominal pain, and the pain is relatively more severe, and sometimes emergency surgery may be needed to confirm the diagnosis and treatment.