There are more causes of bloating when hungry, which need to be considered to be caused by indigestion, gastritis, peptic ulcer, intestinal obstruction and other factors. 1. Dyspepsia: If the digestive enzymes are insufficient, it will usually make the patient’s intestinal peristalsis dysfunction, intestinal flora imbalance, which will make it difficult to increase the production of gas through the discharge. And at this time the normal secretion of gastric acid, it will make the patient appear the phenomenon of bloating when hungry. 2. Gastritis: Gastritis usually leads to excessive secretion of gastric acid, rapid digestion of food, poor absorption and excretion will make the patient appear bloating when hungry. 3. Acute gastric retention: The treatment of acute gastric retention can be divided into gastrointestinal decompression and causative treatment. After gastrointestinal decompression and suctioning out gastric contents, if the obstruction is caused by pyloric edema, some acid-suppressing drugs such as omeprazole can be used, and at the same time, the patient should be given warm saline gastric lavage to promote the absorption of edema. If the fibrous scarring obstruction requires surgical treatment. 4. Intestinal obstruction: If the patient has power intestinal obstruction, the contents of the intestinal lumen may not be able to run normally, abdominal distension, abdominal pain, and the anus to stop the exhaust and other symptoms. However, the accumulation of intestinal contents has less impact on digestion and absorption in the stomach, which in turn will make the patient suffer from abdominal distension during hunger. It is recommended that patients who experience this symptom for a long period of time should go to the hospital in time for examination and treatment.