The causes of old fart are intestinal flora dysbiosis, consuming too much gas-producing food, inflammatory bowel disease, etc. According to the causes, such as intestinal flora dysbiosis can be regulated by bifidobacteria. 1. Intestinal flora dysbiosis: intestinal flora dysbiosis is usually caused by dietary factors, drug factors, gastrointestinal immune dysfunction. Intestinal flora dysbiosis can be manifested as abdominal distension, change of bowel habit, increase of gas emission, etc.. This condition can be regulated by intestinal microecological agents such as Bifidobacterium bifidum and Lactobacillus acidophilus. 2. Inflammatory bowel disease: usually caused by bacterial or viral infection, due to the intestinal mucosa congestion and swelling, may stimulate intestinal peristalsis function, resulting in symptoms of increased exhaust. Usually need to use levofloxacin anti-inflammatory treatment, if necessary, also need glucocorticoid inhibition. 3. Dietary factors: often consume increased gas-producing foods, such as sweet potatoes, potatoes, soy foods, etc., these foods in the intestinal tract is easy to ferment to produce a large amount of gas, thus leading to increased exhaust phenomenon. There is no need to worry too much about this situation, it is recommended to adjust the diet structure and increase the intake of food types. There are many other reasons for farting, and if there are persistent symptoms of increased exhaust, or if they are accompanied by other gastrointestinal discomforts, it is recommended that you go to a regular hospital in time to find out the cause and get active treatment.