The first thing you need to do is to exclude the case of cold at night. The peristalsis of the gastrointestinal tract will be disturbed after the cold, accompanied by the dysbiosis of the intestinal flora, manifested as diarrhea, bloating, etc. After excluding this situation, the possibility of chronic colitis or colon polyps should be considered, both of which need to do e-colonoscopy to clarify. If the examination is clear that chronic colitis, consider the use of rectification or Jin Shuangqi plus compound glutamine enteric granules to regulate; if it is a colon polyp, electrocoagulation electrosurgery of polyps needs to be performed under e-colonoscopy, and after the operation also needs to use drugs to nourish the intestinal mucosa and regulate the intestinal flora. In the diet, we need to eat less spicy, fried and other stimulating foods, abstain from alcohol, and pay attention to the warmth of the abdomen.