Abdominal bloating and farting may be caused by improper diet, or it may be caused by chronic gastritis, irritable bowel syndrome and other diseases. 1. Improper diet: If you usually talk while eating and inhale a lot of air, it is easy to cause intestinal flatulence and abdominal distension and farts. Secondly, if you eat a lot of sweet potatoes, soy products and other easy to produce gas food, it is also easy to appear this situation, are normal physiological phenomenon. 2. Chronic gastritis: The common cause of this disease is infection by Helicobacter pylori. Other causes include autoimmune abnormalities, duodenogastric reflux, long-term consumption of strong tea, smoking, alcoholism and so on. Most patients will have abdominal distension, acid reflux, belching and other symptoms, so the patient will have the performance of abdominal distension and fart much. 3. Irritable bowel syndrome: the etiology and pathogenesis of the disease have not been fully clarified, but studies have shown that it may be related to increased visceral sensitivity, abnormal gastrointestinal dynamics, neurological abnormalities, intestinal infections, intestinal micro-ecological imbalance and other reasons. Patients may experience symptoms of dyspepsia such as belching, bloating, and abdominal pain, which may be manifested as abdominal distension with excessive farts. If abdominal distension and farting is excluded as a physiological phenomenon, it is necessary to go to the hospital in time to improve the examination and clarify the specific cause.