Abdominal pain after a full meal is a common digestive tract symptom, which may be caused by gastric ulcer, gastroenteritis, gallbladder stones with cholecystitis and acute pancreatitis. Patients need to go to the hospital in time for relevant examinations and treatment under the guidance of professional doctors after the diagnosis of the disease. Common causes and treatments 1, gastric ulcer: mainly due to Helicobacter pylori infection, bile reflux, drug factors, etc., resulting in damage to the mucosa of the stomach, stomach pain after eating a full meal. Patients need to carry out targeted treatment according to the cause, such as for H. pylori infection, which can be treated with amoxicillin, clarithromycin, proton pump inhibitors, bismuth; 2, gastroenteritis: mainly due to overeating, alcoholism, microbial infection and other factors, causing abdominal pain, diarrhea, vomiting and other symptoms. Patients need to adjust their diet, try to have small and frequent meals, and avoid eating greasy and stimulating food. If the symptoms are serious, it is necessary to choose antidiarrheal drugs such as montelukast; antiemetic drugs such as metoclopramide, and oral rehydration salts, etc.; 3. Gallbladder stones with cholecystitis: patients with severe right upper abdominal pain accompanied by nausea, vomiting and other symptoms after eating greasy food, it is necessary to give scopolamine treatment promptly according to medical advice to achieve the purpose of antispasmodic and paroxysmal pain, and give antibiotic anti-inflammatory treatment, and after the elimination of inflammation 4, acute pancreatitis: common in patients who drink a lot of alcohol or overeat, can appear severe abdominal pain. Patients need to follow medical advice to fast completely, gastrointestinal decompression, anti-infection and rehydration and other supportive treatment to relieve symptoms. Caution: The cause of abdominal pain after eating a full meal needs to be promptly identified and then treated. Unauthorized use of painkillers is strictly prohibited to avoid masking the condition.