Sudden stomach pain, also known as acute abdominal pain, has more causes. Physiological causes include cold, eating stimulating food, strenuous exercise, etc. Pathological causes include pancreatitis, gallbladder disease, etc. 1. Physiological causes: most of them are gastrointestinal spasms caused by various reasons, such as eating cold food, irritating food, being cold, and strenuous exercise. Generally, it lasts for a short time and can be relieved by removing the causative factors. 2. Pathologic causes: most of the existence of digestive system diseases, common pancreatitis, gallbladder disease, intestinal obstruction. Most of them are accompanied by other uncomfortable symptoms, such as pancreatitis with epigastric pain, accompanied by radiating pain in the back of the shoulder; cholecystitis can lead to paroxysmal aggravation of pain in the right upper abdomen. Sudden pain in the stomach may also have other causes, it is recommended to consult a doctor to determine the cause of the condition and follow the doctor’s instructions for treatment.