The pain on the right side of the stomach may be caused by improper diet, gastritis, peptic ulcer, gastric cancer, etc. It should be treated according to the cause of the disease, gastritis, peptic ulcer should be treated with omeprazole, bismuth potassium citrate, etc., and gastric cancer can be treated with dizocin for pain relief. 1. Improper diet: overeating, eating too fast, talking air into the stomach while eating, eating too much cold and spicy food may stimulate the gastric mucosa and cause pain on the right side of the stomach, which should be adjusted in the diet and develop a good eating habit. 2. Gastritis, peptic ulcer: Helicobacter pylori infection, non-steroidal anti-inflammatory drugs and other causes of gastritis, peptic ulcer, gastric mucous membrane damage, ulcer formation, may have pain in the right side of the stomach, should be applied to inhibit the secretion of gastric acid such as omeprazole, ranitidine, etc., omeprazole + amoxicillin + metronidazole + bismuth potassium citrate antipyloric bacterial treatment. 3. Gastric cancer: gastric cancer can also have pain in the right side of the stomach, which should be treated with dizocin and tramadol for pain relief, surgery combined with chemotherapy and radiotherapy. The right side of stomach pain should go to the hospital in time to find out the cause and treatment under the doctor’s guidance.