Gastric distension and puffing are related to indigestion, gastric neurosis, excessive intake of gas-producing food, and pyloric obstruction. When indigestion occurs, because the food ingested in the stomach is not discharged into the duodenum in time, and it is mixed with digestive juices, it will ferment badly and produce a lot of gas in the stomach, then the stomach will appear bloated, and some people will have nausea and vomiting at the same time. Gastric neurosis often occurs in a state of emotional tension and stress, in the attack, the patient’s gastric peristaltic function will be disturbed, not only can not digest the food in the stomach, part of the patient, and even gastric retrograde peristalsis, which leads to gastric distension, bulging. Foods such as sweet potatoes, groundnuts, soybeans, etc., produce a lot of gas when they are ingested into the stomach, so after eating them, many people will have symptoms of bloating and puffing, which need to be alleviated only after the food is digested. Some people are bloated and bulging because of pyloric obstruction, these people ingest food during the day, after digestion, because it can not be discharged, and in the stomach for a long time, then not only will cause irritation to the stomach wall, but also cause the symptoms of bloating and bulging.