The bowel movement is not clean, may be related to intestinal inflammation, sinusitis, rectal prolapse and other diseases. 1. Intestinal inflammation: colitis, irritable bowel syndrome, Crohn’s disease, etc., are common intestinal inflammatory diseases. When there is inflammation in the intestinal tract, it will make the gastrointestinal mucosa congested and swollen, resulting in gastrointestinal tract dysfunction, can’t absorb the water and nutrients in the intestinal tract normally, and can only be discharged out of the body, which will result in frequent stools, unclean defecation, and always have a bowel movement. 2. Sinusitis: patients with sinusitis will have the feeling of impure bowel movement, accompanied by symptoms such as anal swelling, anal burning and abdominal pain, and hard nodules or enlarged sinuses can be detected during palpation examination. 3. Rectal prolapse: in addition to the bowel movement, always have a bowel movement, rectal prolapse, there is constipation, increased frequency of stool, perianal skin itching and other symptoms, in the examination of the anus can be found to have prolapse of the swelling. Caused by the bowel movement is not clean always have a bowel movement of more reasons, it is recommended to consult a professional doctor, do the relevant examination to clarify the diagnosis, and then carry out treatment.