Flatulence may be caused by dietary factors, as well as indigestion, cirrhosis of the liver and other disease factors and drug factors. 1. Dietary factors: overeating, eating too fast, eating a lot of milk, beans and other gas-producing foods and other factors may appear flatulence. 2. Disease factors: bloating after eating greasy food may be caused by cirrhosis of the liver, accompanied by fatigue, loss of appetite and other symptoms; bloating, early satiety, epigastric discomfort and other symptoms may be caused by indigestion; lower abdominal distension may also be suffering from pelvic inflammatory disease, prostate hyperplasia and other diseases caused by. 3. Drug factors: after taking certain drugs, such as rifampicin, isoniazid, etc., there may be digestive discomfort, which in turn causes symptoms of bloating. If necessary, it is recommended to go to the hospital and ask the doctor to make a judgment.