Stomach pain after eating is mostly considered to be caused by digestive system diseases, commonly known as gastroesophageal reflux disease, acute and chronic gastritis, peptic ulcer, and so on. It is recommended to take diagnostic oral acid suppressants, combined with gastric mucosal protective agents, commonly used acid suppressants are h2 receptor antagonists, or proton pump inhibitors. Among them, the ppi class has the strongest acid-suppressing effect, including omeprazole, lansoprazole, rabeprazole, pantoprazole, esomeprazole, etc. Commonly used gastric mucosa protectors are bismuth agents, including bismuth potassium citrate, colloidal bismuth pectin, gastric bismuth magnesium, etc. If the abdominal pain symptoms are significantly relieved after taking the above drugs, it means that the treatment is effective, and it is recommended to improve the electronic gastroscopy examination for clear diagnosis at an optional stage as appropriate. If abdominal pain symptoms are not relieved after taking the drugs, attention should be paid to exclude lesions of other organs in the abdominal cavity, commonly appendicitis, pancreatitis, cholecystitis, urinary stones, gynecological diseases, etc. Relevant examinations should be perfected to clarify the diagnosis and give corresponding treatment.