Visible redundancy around the anus, there are many reasons: 1, there may be mixed hemorrhoids, such as long-term stimulation in the stool, the anal cushion pathologically hypertrophied, and thus dislocated out of the anus and the formation of. Mixed hemorrhoids prolapse outside the anus especially external hemorrhoids, sometimes there will be superfluous swelling, especially connective tissue external hemorrhoids or varicose external hemorrhoids. Don’t be nervous about this situation, it is the varicose veins blood vessel mass. 2, perianal flab, may be caused by anal fissure. Because long-term chronic anal fissure will lead to the triple sign, that is, anal fissure, anal papillae hypertrophy, anterior hemorrhoids, perianal hemorrhoidal venous reflux can occur, which leads to the occurrence of anterior hemorrhoids.3, may be rectal polyps, if rectal polyps from the anus is relatively close to the rectum, long-term stool stimulation of rectum, the tip of the long easy to get out of the formation of perianal redundancy. So there is a perianal swelling, should be performed visual diagnosis, rectal palpation, if necessary, can be performed anorectal ultrasound or anoscopy to clarify the diagnosis.