Internal hemorrhoids, rectal prolapse, and anal papilloma are among the lesions that can cause the anus to bulge outward. If it is due to the prolapse of the hemorrhoidal core of the internal hemorrhoids, caused by the anal area to the outward protrusion, in the treatment of the milder symptoms, you can through the potassium permanganate wash or saline for cleaning. Then the medicine plug treatment, commonly used hemorrhoid suppositories including Ma Yinglong hemorrhoid suppositories or anus tai hemorrhoid suppositories and so on. For more severe symptoms including internal hemorrhoids stage III and IV, they should be treated by surgical excision. The commonly used surgical procedure is proctoscopic surgery, where the hemorrhoidal nucleus is stripped under visualization. In the case of rectal prolapse, the prolapsed rectum can be restored manually in mild cases, while prolonged prolapse needs to be treated by laparoscopic surgery, in which the prolapsed rectal tissues are restored and secured surgically under visualization. In the case of anal papillomas, surgery is required to remove them.