Frequent urge to have bowel movement and unshapely stool are commonly caused by the following reasons: intestinal tumor, intestinal infection, intestinal dysfunction and so on. 1. Intestinal tumor: including rectal cancer, colon cancer, etc. Due to the stimulation effect of tumor, patients will have frequent urge to have stool, and there is often a change of stool character, which can be dilute stool, and it may be mucus, pus and blood stool. 2. Intestinal infection: after the intestinal infection, the intestinal peristalsis will be accelerated, the urge to pass stool will be increased, and the secretion of intestinal fluid will be increased, which will lead to scanty stools, and may be with mucus. 3. Intestinal dysfunction: If the abdomen catches cold, or eat spicy and stimulating food, it will lead to intestinal dysfunction, accelerated intestinal peristalsis, and increased intestinal secretion, which will lead to increased bowel movements and unshaped stools. It is recommended that patients go to the hospital, can improve the stool routine, colonoscopy and other tests, usually can be clearly diagnosed, and then can be treated accordingly.