Farting, also known as anal exhaust, is often caused by indigestion. If accompanied by other symptoms, it should be noted that there may be a risk of intestinal obstruction, colitis, ulcerative colitis and other diseases. 1. Dyspepsia: due to diet or cold stimulation of the stomach and intestines, gastrointestinal peristalsis increased, the symptoms of increased anal discharge can occur, usually disappear on their own. 2. Intestinal obstruction: after the occurrence of intestinal obstruction, in the early stage of obstruction, the accumulated gas can still be discharged, and at the same time, due to the obstruction caused by the intense intestinal peristalsis can lead to an increase in anal exhaust. 3. Colitis or ulcerative colitis: in colitis or ulcerative colitis, the patient’s gastrointestinal peristalsis increases, and there may be increased exhaust, accompanied by abdominal pain, diarrhea, and mucus, pus and blood stool. When there is an increase in anal exhaust, usually pay attention to reduce soy products, coarse grain products such as easy to produce gas, easy to ferment the intake of food, eat less spicy stimulating food. If the symptoms of increased anal discharge can not be relieved, it is recommended to consult a doctor in time to avoid delaying the condition.