Once at night, diarrhea is considered: a. Gastrointestinal dyspepsia, irregular diet, overeating, like to eat spicy and stimulating food, high fat diet or do not pay attention to warmth abdomen cold, etc., can cause gastrointestinal dyspepsia, gastrointestinal peristalsis abnormalities, functional disorders. Food can not be well digested and absorbed, stay in the gastrointestinal tract for too long, abnormal fermentation will appear diarrhea, you can take domperidone, stomach and appetite tablets, lactobacillus tablets treatment. Second, chronic colitis, chronic colitis is a chronic inflammatory lesion of the colonic mucosa tissue, mainly characterized by diarrhea, abdominal pain, can take ciprofloxacin, haloperidol drugs for treatment. Third, gastroenteritis, gastroenteritis is caused by microbial pathogenic bacteria infection, the main symptoms are diarrhea, abdominal pain, you can take enteritis or haloperidol treatment.