Stomach pain after cholecystectomy may be due to cholecystectomy syndrome, bile reflux, gastritis and other diseases. 1. Cholecystectomy syndrome: refers to a series of clinical symptoms related to biliary pathology after cholecystectomy, the main symptoms include pain and discomfort in the right upper abdomen or under the right costal margin, which can be vague pain. 2. Bile reflux: As the bile secreted by the liver after cholecystectomy cannot be stored in the gallbladder, it may continue to be excreted into the stomach as well as the intestines. The bile in the intestines may reflux into the stomach, causing the patient to experience stomach pain. 3. Gastritis: If the patient has gastric ulcer or duodenal ulcer, it may show distension and discomfort in the upper abdomen. If the patient has symptoms of stomach pain after cholecystectomy, it is recommended to consult a doctor in time, under the guidance of the doctor, improve the relevant examination, clarify the cause of the disease and standardize the treatment.