Abdominal pain, diarrhea and other conditions can be caused by many reasons, the most common causes are two, as follows: 1. If the disease is acute onset, acute enteritis is the most common, probably because of an uncontrolled diet, diet is not clean, unhygienic trigger. Diarrhea is usually dilute watery stool or paste-like stool, mucus-pus-blood stool is relatively rare. For such patients, stool routine, stool culture, and blood tests can be performed to clarify the diagnosis. If the patient has only abdominal pain and diarrhea symptoms, symptomatic treatment of abdominal pain and diarrhea can be given, for example, Simethicone can be given to stop diarrhea, abdominal pain can be given antispasmodic drugs, if the patient has a serious infection can be given antibiotic treatment; 2, irritable bowel syndrome type diarrhea, the patient will have long-term abdominal pain and diarrhea symptoms, can not have any organic changes, examination of all aspects of the colonoscopy are normal, is a functional disease. Symptomatic treatment can be given, such as antidiarrheal and antispasmodic drugs for treatment, and probiotics can be given for treatment. Irritable bowel syndrome diarrhea is closely related to psychological factors and can also be treated with anti-anxiety and anti-depressant drugs, such as Dextran. From the perspective of traditional Chinese medicine, Chinese herbal medicine has a good therapeutic effect on irritable bowel syndrome diarrhea, and can receive better results through the liver and spleen theory of treatment.