Drinking hot water on diarrhea, and gastrointestinal sensitivity, irritable bowel syndrome, enteritis and other factors. 1. Intestinal sensitivity: some people’s intestinal tract is relatively sensitive, easy to cause a stress reaction after drinking hot water, thus causing diarrhea, but there is no organic lesion. 2. Irritable Bowel Syndrome (IBS): a dysfunctional syndrome without organic lesions. When affected by diet, environment and spirit, diarrhea may occur suddenly. Drinking water without paying attention to the water temperature may also cause diarrhea and abdominal pain suddenly. 3. enteritis: enteritis severe easy to appear intestinal mucosa ulceration, congestion, edema, etc., at this time to drink hot water will stimulate the intestinal mucosa, thus causing diarrhea. Drinking hot water on diarrhea, may also be gastric ulcer, duodenal ulcer and other diseases, it is recommended to observe, if the long-term or gradual progress of the disease, affecting the normal eating, need to consult a doctor in a timely manner.