There are many causes of right abdominal distension, which are considered to be gastrointestinal diseases, such as gastric ulcer, duodenal ulcer, gastric Helicobacter pylori infection, intestinal inflammation, appendicitis, etc. as well as hepatic and biliary diseases, such as cholecystitis, gallstones, hepatitis, etc., or even right abdominal peritonitis. The most common is gastrointestinal disorders. The short-term occurrence of right abdominal bloating is considered to be the result of eating unfresh food or hard-to-digest food that irritates the mucosa of the gastrointestinal tract and leads to abdominal bloating. It may also be caused by eating gas-producing food, such as soybeans, lentils, etc. Long-term right abdominal distension may be caused by chronic gastritis, gastric ulcer, duodenal ulcer, Helicobacter pylori infection and other chronic diseases or chronic diseases of the liver and gallbladder, and it is recommended that gastroscopy and abdominal X-rays and CT scanning be performed to find out the location of the lesion and the cause of the disease.