9-year-old children’s stomach pain after eating may be caused by indigestion, gastric ulcer, enteritis and so on. 1. Indigestion: if affected by infection, gastrointestinal dyskinesia, visceral sensory hypersensitivity and other factors, it will lead to the phenomenon of 9-year-old children’s stomach pain after eating, and the main symptoms include a feeling of early satiety, middle-upper abdominal pain, and postprandial fullness and bloating. 2. Gastric ulcer: when the gastric mucosa in the high gastric acid, pepsin invasion, resulting in defense imbalance, digestion of its own mucosa, which leads to a local inflammatory defect, resulting in 9-year-old children stomach pain after eating. 3. enteritis: when the intestinal tract is affected by bacteria, viruses, radiation damage, dietary stimulation, drug stimulation and other factors, will lead to 9-year-old children stomach pain after eating, the main clinical manifestations of fever, nausea, vomiting, abdominal pain, diarrhea and other symptoms. Parents are advised to bring their children to the hospital in a timely manner, under the diagnosis of the doctor, according to the child’s condition to carry out relevant examinations, through the results of the examination, to take targeted treatment.