Drugs commonly used to treat abdominal distension are as follows: I. Anti-distension class, mainly simethicone oil and dimethicone oil. These drugs can reduce the surface tension and eliminate the air bubbles in the gastrointestinal tract, so that the gas trapped by the air bubbles can be expelled from the body; second, drugs that promote gastrointestinal peristalsis, commonly used drugs such as morpholine, mosapride, itopride hydrochloride. These drugs can enhance the tension and peristalsis of the smooth muscle of the stomach and intestines, so that the gastric emptying speed up, digest or advance food, promote food and gas out of the body; third, probiotics, commonly used drugs are the whole intestine, gold diflucan, pefikon, atenine, etc. These drugs can mainly regulate the dysbiosis of intestinal flora and eliminate the symptoms of indigestion and bloating.