Tummy pain rolled up is much better may be due to acute gastroenteritis, intestinal spasm and cholecystitis and other causes of pain. 1. Acute gastroenteritis: may be caused by bacterial infection, stimulation of the gastric mucosa caused by the pain, rolled up, the local oozing tension will be reduced, the stimulation of the nerves will be reduced, thus leading to acute gastroenteritis caused by stomach pain rolled up, better. 2. Intestinal spasm: it may be due to various reasons that lead to excessive contraction of the smooth muscle of the intestinal wall, thus causing abdominal pain, roll up the body so that the abdominal and back muscles can be relaxed, thus relieving the symptoms of intestinal spasm. 3. Cholecystitis: may be caused by inflammation, because the peritoneum is stimulated by factors causing pain. Rolling up can reduce the peritoneal stretching, so that the peritoneal irritation symptoms to reduce, so cholecystitis caused by stomach pain roll up is much better. If the patient rolled up the stomach is still persistent pain, it is recommended to go to the hospital in a timely manner, to identify the cause of the targeted treatment.