Abdominal pain, vomiting and diarrhea in children mainly include the following causes: first, the most common gastrointestinal disorders in children, including vomiting and diarrhea caused by gastrointestinal flu, which should be treated with aggressive anti-inflammatory and anti-infective therapy. The second type is not excluding inflammation of the mesenteric lymph nodes in children, where patients often present with abdominal pain and diarrhea along with fever and dilute watery stools. In the third case, the patient may also have atypical acute appendicitis or intussusception, which should be treated actively by emergency surgery. Therefore, for diarrhea and vomiting caused by abdominal pain in children, the cause should be actively investigated in the hospital and the exact treatment should be found for symptomatic treatment.