Eating a little rice stomach pain, stomach pain, regurgitation may be acute gastroenteritis, appendicitis, intestinal obstruction and other diseases caused. 1. Acute gastroenteritis: Acute gastroenteritis is an acute inflammatory reaction of the gastrointestinal mucosa, the cause of which may be related to pathogen infection, drugs, alcoholism, food stimulation and other factors. Patients may experience nausea, vomiting, abdominal discomfort, diarrhea and other symptoms, and severe abdominal pain after eating, which may also be accompanied by fever, headache and other symptoms. 2. Appendicitis: It may be related to the blockage of the appendix lumen, bacterial infection and other factors, colds, improper diet and other reasons may also trigger the disease. Patients mainly manifest abdominal pain, accompanied by vomiting, nausea, fatigue and other symptoms. 3. Intestinal obstruction: Intestinal obstruction is mostly related to intestinal torsion, intestinal spasm, mesenteric vascular embolism and other factors, and the patient will have abdominal pain, nausea, abdominal distension, vomiting, and stop defecation and other symptoms. Eat a little rice stomach pain stomach pain regurgitation causes more, it is recommended to go to the regular hospital to consult the examination, to clarify the cause of the disease.