There are many reasons for a four-year-old child’s constant stomach pain and flatulence, such as constipation, gastroenteritis, intestinal tumors, intestinal spasms and so on. 1. Constipation: It may be caused by a combination of factors such as abnormal gastrointestinal dynamics, abnormal visceral sensation, improper feeding, etc., which may result in constipation, abdominal pain, bloating and other conditions. 2. Gastroenteritis: Typical clinical manifestations of gastroenteritis are diarrhea, nausea, vomiting and abdominal pain. People with weak spleen and stomach, young and old are prone to abdominal distension, abdominal pain and farting. 3. Intestinal tumors: such as neuroblastoma which is common in children, the size of the tumor becomes bigger, which will lead to the feces in the intestines can not be discharged in time, and there will be stomach pain and flatulence. 4. Intestinal spasms: often recurring, related to allergic factors, physical factors, dietary factors and so on. There may be other reasons (gastric ulcer, allergic purpura, etc.) for a four-year-old child’s stomach pain and flatulence, so it is recommended to consult a doctor in time and carry out standardized treatment under the doctor’s guidance to avoid adverse consequences.