Stomach bloating but hungry is caused by gastrointestinal dysfunction, duodenal ulcer, gastrointestinal dysfunction in the onset of gastrointestinal dysfunction will be disturbed, some people will appear to stop the movement of intestines and stomach bloating will occur. There is no food in the stomach, and there is also a feeling of hunger. Gastrointestinal allergy is caused by excessive emotional tension, excitement, depression, and stress, and it requires emotional regulation to be relieved. Duodenal ulcer in the attack of hunger pain, mainly in the absence of food in the stomach during hunger, stomach acid will be directly into the duodenum, the duodenal mucosa caused by irritation. When there is spasm and contraction of the duodenal wall, gastric function is also impaired, so there will be a feeling of bloating in the stomach, which can be diagnosed by gastroscopy and peptic imaging.