Sudden stomach pain in patients may be caused by gastroenteritis, intestinal torsion and acute pancreatitis. 1. Gastroenteritis: when patients consume spicy and stimulating food or eat unclean food, it will lead to stimulation of gastrointestinal mucosa, resulting in the onset of gastroenteritis and the symptoms of sudden pain in the stomach. 2. Intestinal torsion: Improper movement or sudden change of body position after satiety can easily trigger intestinal torsion. When intestinal torsion occurs, the location of torsion will have insufficient blood supply, and sudden pain in the stomach will also occur. 3. Acute pancreatitis: When patients drink a lot of alcohol, the pancreas is activated by a variety of enzymes, causing the pancreatic tissue to digest itself, leading to the occurrence of acute pancreatitis, the attack will lead to the patient to appear suddenly persistent epigastric pain. All of the above diseases can lead to sudden stomach pain, when stomach pain occurs, it is recommended to go to the hospital in time.