There is a meat bag protruding outside the anus, painless and itchy can be considered with hemorrhoids, rectal polyps or warts and other diseases related. 1. hemorrhoids: such as III degree internal hemorrhoids, can be in a long time standing, defecation, exertion, weight and other cases of hemorrhoidal nucleus prolapse outside the anus, need to use the hand to return, generally painless; when the external hemorrhoids to form the skin, there will be a painless, itchy extra-anal protrusion. 2. Rectal polyps: during defecation, polyps located at the lower end of the rectum can be prolapsed outside the anus, and retracted by themselves after the end of the day, usually not accompanied by itching and pain symptoms, if there are larger adenomatous polyps need to be returned to the hand. 3. Warts: caused by human papilloma virus infection, when occurring near the anus, the skin lesions at the beginning of the red small papules, with the gradual increase, can become cabbage-like, papillary or mycotic, patients may be asymptomatic. When abnormal organisms or prolapses appear outside the anus, even if it doesn’t hurt or itch, it is necessary to consult a doctor in time to clarify the cause of the disease, and give treatment as soon as possible under the guidance of a professional doctor, so as to avoid delaying the condition.