The symptom of bowel movement falling out is considered to be caused by rectal prolapse, which can be divided into two types, incomplete prolapse and complete prolapse, according to the type of disease. The main symptoms of rectal prolapse include poor bowel movement, anal incontinence, blood and pus in the stool, and the presence of foreign bodies in the stool resembling intestinal tissues. When patients develop rectal prolapse, the rectal wall and attached mucosal tissues will be pathologically displaced and detached. In the process of defecation, the superficial mucosal tissue of the rectum will be partially or completely detached under the stimulation of excrement, causing the appearance of bowel-like foreign bodies in the process of defecation. Other intestinal diseases such as chronic intestinal mucositis, segmental ileitis, ulcerative colitis, etc. may also cause such undesirable symptoms.