There are more reasons for feeling hungry but abdominal flatulence, but they are mostly considered to be caused by digestive system diseases, such as indigestion, gastritis, peptic ulcer, intestinal obstruction, liver cirrhosis, etc. 1, indigestion: insufficient digestive enzymes will lead to gastrointestinal peristaltic dysfunction and intestinal flora dysbiosis, which will easily cause increased intestinal gas production and not easily discharged through exhaustion, thus leading to abdominal distension, while normal secretion of gastric acid will cause abdominal distension at the 2, gastritis: the typical symptom of gastritis is increased secretion of gastric acid, so that the food is digested too quickly, but the absorption and excretion is not smooth, which can easily produce the symptoms of feeling hungry but abdominal distension; 3, peptic ulcer: peptic ulcer is mainly manifested as periodic epigastric pain, while abnormal secretion of gastric acid, gastric acid may stimulate the intestine, complicated by abnormal intestinal peristalsis, so that patients appear to feel hungry but abdominal symptoms of flatulence; 4, intestinal obstruction: mostly power-type intestinal obstruction, so that the intestinal tube movement is impaired, the intestinal cavity contents can not run normally, common symptoms are abdominal distension, abdominal pain, anal stop exhaust, defecation, etc.. Although the intestinal contents accumulate, but the digestion and absorption in the stomach is still normal, which can lead to the performance of feeling hungry but abdominal distension; 5, cirrhosis: patients with advanced cirrhosis will have symptoms such as abdominal distension and abdominal pain, while the body itself consumes more, which can produce a sense of hunger.