Stress causes diarrhea is more likely to be related to the irritable bowel syndrome. Because the central nervous system and the intestinal tract form an axis of mutual interaction and feedback, if the mental stress or anxiety, nervousness, may lead to gastrointestinal dysfunction, can appear a variety of functional gastrointestinal diseases, such as irritable bowel syndrome, functional dyspepsia, functional constipation and so on. Clinically common patients with irritable bowel syndrome can experience diarrhea, abdominal pain, constipation and other symptoms when they are stressed and tense, as well as alternating diarrhea and constipation, and abdominal pain can be relieved after defecation. If the patient’s diarrhea symptoms are serious, or persist without improvement, it is recommended to go to the regular hospital in time, after clarifying the cause of the disease, under the guidance of the doctor for targeted treatment.