Small meatball-like lesions in the anus, i.e., anal proliferation, may be hemorrhoids, anal polyps, warts and other symptoms, it is recommended to consult a doctor to diagnose. 1. If the anus is prolapsed during bowel movement, accompanied by intermittent blood after bowel movement, perianal itching and other symptoms, and can be incorporated back into the anus, it is mostly considered to be the prolapse of internal hemorrhoids leading to symptoms. 2. If accompanied by diarrhea, mucus, pus and blood stools and other intestinal irritation symptoms, mostly considered for the anal polyp. 3. If there is a history of unclean sexual behavior, anal superfluous organisms can gradually increase in size, partly accompanied by itching, etc., is considered to be caused by anal warts. The above is part of the possible reasons, there may be other reasons, so it is recommended that the patient timely medical treatment, by a professional doctor for differential diagnosis, as soon as possible to give targeted treatment.