The constant urge to defecate is related to gastrointestinal dysfunction, acute enteritis, ulcerative colitis and intestinal cancer, as follows: 1. In the presence of gastrointestinal dysfunction, the absorption function of the intestine is damaged, so it is unable to absorb the nutrients in food, resulting in a relative increase in food residues, because of hyper-peristalsis there will be an increase in the number of bowel movements. Patients with gastrointestinal dysfunction often want to defecate and the stool is thick in nature, accompanied by abdominal distension.2. Inflammation in the intestinal mucosa during an attack of acute enteritis can cause stimulation of the smooth muscle of the intestinal wall, resulting in excessive expansion and contraction of the smooth muscle and an increase in the number of bowel movements.3. The main function of the colon is to absorb water and promote the formation of stool, and once the ulcerated surface of the colon mucosa appears, it will have an impact on the function of the colon. The main function of the colon is to absorb water and promote the formation of stool, once the ulcerated surface of the colon mucosa will affect the function of the colon, patients with ulcerative colitis will experience an increase in the number of stools, and some people will also experience mucus-pus-blood stools. 4.