Prolonged loose stool, always have bowel movements, may be due to colorectitis, colorectal tumors, irritable bowel syndrome and so on. 1. Colorectitis: patients may have diarrhea, abdominal distension, abdominal heaviness, mucus stools and other symptoms, which are often accompanied by changes in bowel habits, and may cause prolonged loose stools, always having bowel movements. 2. Colorectal tumor: Colorectal tumor will stimulate the intestinal mucosa, resulting in the symptoms of incomplete bowel movement and loose stool. 3. Irritable bowel syndrome: patients with irritable bowel syndrome may have the symptoms of constipation and diarrhea alternately, which may be manifested as prolonged diarrhea, incomplete bowel movement, and the phenomenon of always having bowel movement. It is recommended to consult a doctor in time to clarify the cause of the disease under the guidance of a professional physician if the above symptoms occur.