Because there are more causes of stomach pain, different drugs are used for different reasons, which are mainly divided into: 1, stomach cramps caused by dietary factors, abdominal cold, etc., anticholinergic drugs can be given to relieve pain, such as scopolamine, atropine, belladonna, etc. 2, due to excessive secretion of gastric acid resulting in damage to the gastric mucosa, and burning pain in the stomach caused by reflux esophagitis, acid inhibiting drugs should be given, such as cimetidine, famotidine, omeprazole, pantoprazole, and lansoprazole. Such as cimetidine, famotidine, omeprazole, pantoprazole, and lansoprazole, etc., and drugs to neutralize gastric acid, such as sodium bicarbonate, aluminum hydroxide, etc. When the stomach acid is reduced, the pain can improve on its own, no need to give pain medication. 3, due to indigestion, gastrointestinal tract dysfunction and intestinal flora dysbiosis resulting in stomach distension and pain, can be given to help digestion drugs, such as pepsin, elimination tablets, etc., to promote intestinal peristalsis can be given domperidone, mosapride, etc.. Drugs to adjust intestinal flora can be given to Lactobacillus and Bifidobacterium, etc. No pain medication is needed.