Dyspepsia is mainly considered as dyspepsia, chronic colitis and irritable bowel syndrome. 1. Indigestion: when the patient’s gastrointestinal power is insufficient, due to the large amount of food hoarded in the stomach, can not be fully digested, not fully digested food into the intestinal tract, will stimulate the intestinal tract, resulting in the symptoms of diarrhea twice a day. 2. Chronic colitis: If the patient’s long-term diet irregularities or intestinal infections are not cured for a long time, it may induce the occurrence of chronic colitis, which will lead to abdominal pain, diarrhea symptoms occurring over three days. 3. Irritable bowel syndrome: if the patient is often anxious, nervous or intestinal infections may trigger the occurrence of this disease, and abdominal pain and diarrhea for three days is a symptom of this disease. As there are many causes of diarrhea, it is recommended that patients go to the hospital in a timely manner to clarify the cause of the disease and actively treat it.