Stomach and stomach are painful related to acute gastroenteritis, pancreatitis, appendicitis, and intestinal obstruction, as follows: 1. In an attack of acute gastroenteritis, the entire mucosa of the digestive system will be inflamed, and inflammation will not only release inflammatory factors causing pain. The inflammation will not only release inflammatory factors causing pain, but also stimulate the smooth muscle, resulting in spasmodic contraction of the smooth muscle and therefore accompanied by nausea, vomiting, bloating, diarrhea and other symptoms. 2. The pancreas can secrete pancreatic fluid, which can help digest food in the stomach. During an attack of pancreatitis, the patient will experience severe pain, and the pain will also radiate to the surrounding organs, so the patient will be accompanied by abdominal and stomach pain. 3, appendicitis during the attack, the patient is mainly metastatic right lower abdominal pain, and also cause stimulation of the upper digestive system, and cause symptoms of stomach discomfort, many patients with appendicitis will be accompanied by nausea, vomiting, bloating, diarrhea, fever and other symptoms. 4, intestinal obstruction. 4, intestinal obstruction in the attack, due to the intestinal contents of the blockage, can not be properly unblocked, so it will lead to excessive expansion of the intestinal cavity caused by stomach distension, and intestinal obstruction will also affect the digestive emptying of food in the stomach stomach discomfort.