In the process of clinical treatment, we often encounter some patients with painless perianal drop, especially women, mostly above 40 years old, who mainly feel perianal drop, increased frequency of stool, feeling of defecation, and incomplete after stool. 2 anal inflammatory diseases: anal sinusitis, anal canalitis, inflammation of the perianal skin. Sinusitis is usually accompanied by tingling, burning sensation in the anus, and anal discharge. 3 outlet obstructive constipation, is the most common disease, including rectal mucosal prolapse, rectal prolapse, perineal descent, puborectal muscle spasm, etc., mainly manifested as defecation difficulties, poor bowel movement, post-pooperative feeling, perianal drop, small abdominal pain and discomfort, etc., generally the stool is not dry, defecation without bleeding, no pain in the anus during the stool. 4 knots, proctitis, is also more common, manifested as an increase in the number of bowel movements, perianal drop, after the feeling of incomplete stool. However, most of them are accompanied by blood in the stool, and the color of blood can be bright red or dark red, or there is pain in the lower abdomen, which can be identified by colonoscopy. 5 Rectal and anal tumors, generally manifested as change in bowel habits, increased frequency of stool, urgency, uncontrollable defecation, accompanied by bleeding, perianal cramps, pain, stool with jelly or bloody material. 6 Anorectal foreign body. Generally anal finger diagnosis can be found, common chicken bones, seafood skin, toothpicks, etc. 7 other diseases: some diseases of obstetrics and gynecology and prostate hypertrophy, etc. The above situation is not necessary to panic, to go to the regular hospital anorectal examination, generally through the anal finger diagnosis, anoscopy, proctoscopy, fecal imaging and other tests can be a clear diagnosis, before a clear diagnosis, please do not take drugs, so as not to delay the disease. Only after the diagnosis is clear can systematic treatment be carried out.