Prolapse is a common symptom of anal disease and can be seen in a variety of anal diseases, not necessarily hemorrhoids. It is not necessarily hemorrhoids. Clinically, it is not difficult to identify them based on the relationship between prolapse and defecation, the shape and color of the prolapse and other clinical symptoms. 1, internal hemorrhoids II, III degree, when the stool can be seen to prolapse obvious hemorrhoid nucleus, smooth surface, light pink, visible varicose vascular plexus, very close to the anus, some can be self-retracted, sometimes can not be self-retracted, need to be reset by hand, often accompanied by blood in the stool symptoms. The shape is strawberry-shaped. 2.Anal fissure: pain, bleeding, prolapse at the anus can not be incorporated into the anus, for the skin superfluous things growing in the bottom of the anal fissure. 3, rectal prolapse: prolapse during defecation, contraction after defecation can be self-retracted, the surface of the prolapse is also mucous membrane, but the prolapse is larger than hemorrhoids, there is a circular mucosal groove, while hemorrhoids are radial mucosal groove. Rectal prolapse includes rectal mucosal prolapse and total prolapse, mucosal prolapse is caused by mucosal relaxation, while total prolapse is formed by the relaxation of the tissues supporting and fixing the rectum, which cannot fix the rectum, rectal mucosa prolapse outside the anus is hemispherical, the surface is mucous membrane, there are many radial folds, rectal total prolapse prolapse is larger, columnar or cow horn-shaped, the length varies from a few centimeters to more than ten centimeters, the touch is tough and The length of the prolapse is from a few centimeters to a dozen centimeters, which is tough and elastic to touch. 4, anal canal ectropion: occurs during defecation, the surface is covered by skin tissue, often accompanied by hemorrhoids and rectal prolapse. 5.Anal papilla hypertrophy: it is formed by the repeated stimulation of the anal papilla by chronic inflammation and the proliferation of fibrous tissue. It comes out during defecation, partly by itself, and partly by hand. The surface of the prolapse is skin, mostly irregularly shaped, with a shaped anal canal epithelium with a slender tip and some without, grayish white, rarely bleeding, but with anal discomfort and no pressure pain. It can be one or several. 6, rectal polyps: rectal polyps are new organisms that occur on the rectal mucosa, the polyps with tips or larger polyps closer to the anus can come out during defecation, can be self-returned, the surface is mucous membrane, mucous membrane inflammation when the surface of the prolapse is congested, some can see the villi-like protrusions, strawberry-shaped, some with tips, some without tips, often accompanied by bleeding symptoms. 7.Thrombosed external hemorrhoid: a sudden swelling located in the anal canal with obvious pain. When you press the external hemorrhoid, there are hard nodes under the skin with purple color.