Morning diarrhea can be seen in physiological causes, irritable bowel syndrome, intestinal infections. 1. Physiological reasons: part of the population morning diarrhea belongs to physiological reasons, morning defecation formed a habit, the patient gastroenteroscopy and other no abnormal results, generally do not need special treatment. 2. Irritable bowel syndrome: a disease of unknown etiology, may be related to a variety of factors, such as gastrointestinal tract dysfunction, etc., which may be manifested as diarrhea in the morning, but there is no gastrointestinal mucosal organism changes. Treatment is based on symptomatic therapy and adjustment of intestinal function. 3. Intestinal infections: Intestinal infections can lead to an increase in intestinal secretions, which may be manifested as morning diarrhea, accompanied by abdominal pain and other symptoms. Frequent diarrhea in the morning, we should go to the hospital in time, to clarify the specific cause of the disease, under the guidance of the physician for treatment.