Diarrhea and gas are associated with an imbalance of intestinal flora, irritable bowel syndrome, and indigestion. Once the intestinal flora imbalance occurs, not only the intestinal absorption of nutrients will be affected, and also unable to absorb the gas in the intestinal lumen, so there will be a large amount of gas in the intestinal tract, so the number of exhaust will increase. Moreover, when there is an imbalance of intestinal flora, some of the bacteria will also cause irritation to the intestinal mucosa, leading to hyperactive intestinal peristalsis, so it will be accompanied by diarrhea. Irritable bowel syndrome has nothing to do with intestinal organic disease, common in the presence of tension, depression, anger and other adverse emotions, some patients with irritable bowel syndrome is to diarrhea as a manifestation of diarrhea, and during diarrhea due to the intestinal wall of the absorption function of the damage, but also appear often exhaust. When the body has indigestion, undigested food enters the intestines and causes irritation to the intestines, thus causing gas and diarrhea.