Stomach pain one hour after lunch may be related to gastritis, gastric ulcer, gastric cancer and other diseases, to be targeted treatment, such as acid suppression, protection of gastric mucosa. 1. Gastritis: need to use drugs to inhibit gastric acid, such as rabeprazole, omeprazole, etc., to promote gastric motility drugs, such as domperidone, to protect the gastric mucosa of drugs, such as magnesium aluminum carbonate. If after examination, there is Helicobacter pylori infection, you also need to use anti-infection quadruple drugs, such as omeprazole, amoxicillin, furazolidone, bismuth potassium citrate for treatment. 2. Gastric ulcer: on the basis of applying medicines for protecting gastric mucosa, acid suppression and gastric dynamics, prolonging the course of treatment, generally the course of treatment for gastric ulcer is 6-8 weeks. 3. Gastric cancer: if gastric cancer is detected after gastroscopy and biopsy, endoscopy, surgery, chemotherapy and other treatments are needed. Stomach pain one hour after lunch, and other reasons, need to go to specialized hospitals for relevant examinations, such as gastroscopy, CT and other examinations, to clarify the cause of the disease, and be treated, and at the same time need to avoid the use of stimulating food and drugs in daily life, light diet, avoid overeating, and quit smoking and drinking.