It is generally considered that abdominal distension may be caused by gastrointestinal dysfunction, but intestinal obstruction should also be excluded. Its onset is closely related to diet and lifestyle, such as excessive intake of high-fiber foods or fiber supplements, dairy products, soy products, high-fat foods and beverages containing carbon dioxide, etc. In this case, it is necessary to adjust the dietary structure, which usually leads to significant improvement. If the bloating is caused by gastrointestinal dysfunction or functional dyspepsia, intervention with drugs that regulate gastrointestinal function and promote gastric motility is required. The presence of organic diseases, such as chronic gastroenteritis, intestinal obstruction, abdominal tumors, etc., should be considered.