Half of the stomach pain occurs in patients and is commonly due to the following reasons: first, acute appendicitis. When patients have pain in the right lower abdomen and it spreads to the periphery, this is often considered to be acute suppurative appendicitis or appendiceal perforation, and they need to go to the hospital as soon as possible to improve relevant tests, such as blood tests, C-reactive protein, abdominal ultrasound, etc. If the disease is present, the appendix needs to be removed and antibiotics should be given for treatment. Second, it may be caused by perforation of the digestive tract, such as gastric perforation, duodenal perforation, colonic perforation, etc. It is necessary to go to the hospital for abdominal CT and colonoscopy for clarification. If the condition is more serious, it is also necessary to perform laparoscopic exploration to help clarify the method. Third, it may be some special intestinal diseases, such as intestinal torsion, intestinal overlap, also need to go to the hospital as soon as possible for clarification. After the onset of abdominal pain, it is necessary to stop eating and drinking until the doctor allows the patient to eat.