There are two diseases that are often considered when something falls out of the anus, the first is hemorrhoids and the second is rectal polyps. The symptom of hemorrhoids is blood in the stool and prolapse, the condition is light, after the prolapse of the swelling can return to the anus on their own, the serious condition of the prolapse of the swelling can not be returned to, need to use the hand to plug back, the most powerful may have prolapse of the swelling stuck in the perianal area resulting in incarceration, severe pain, at this time is the need for emergency surgery. Another possibility is rectal polyps, rectal polyps generally have no obvious clinical symptoms, no pain, no itch, just from the anus during defecation, after the stool can be self-recovery. Rectal polyps also need to be operated as early as possible, because if left unattended, the polyp will gradually increase in size and may develop into rectal cancer after a number of years, so rectal polyps need to be operated as early as possible.