Children vomit after eating too much stomach pain may be caused by improper diet, gastroenteritis and intestinal obstruction. 1. Improper diet: It may be that the child’s gastrointestinal tract is fragile, and the gastrointestinal spasms caused by excessive consumption of cold and stimulating, spicy and greasy foods may lead to vomiting and stomach pain. 2. Gastroenteritis: Inflammation of the gastrointestinal mucosa, mostly caused by bacteria, viruses, fungi, etc., can lead to nausea, vomiting and stomach pain when children eat too much, accompanied by diarrhea, lack of appetite and other symptoms. 3. Intestinal obstruction: it may be caused by the blockage of the intestinal lumen, intestinal pressure and other causes of intestinal obstruction, which may easily cause children to eat too much vomiting and stomach pain, and there will be abdominal distension and stop defecation and other symptoms. When children eat too much vomit stomach pain phenomenon, it is recommended to go to the hospital to identify the cause of the disease, and give standardized treatment.