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 of degree II and III, which can be seen as obvious nuclei with smooth, light pink surface, visible varicose blood vessels, close to the anus, some of them can retract on their own, sometimes they cannot retract on their own and need to be reset manually, often accompanied by symptoms of blood in the stool. The shape is strawberry-shaped. (2) Anal fissure: pain, bleeding, and prolapse at the anus that cannot be retracted into the anus, or a skin-like object growing at the bottom of the fissure. (3) Rectal prolapse: prolapse during defecation, contraction after defecation can be retracted by itself, the surface of prolapse is also mucous membrane, but the prolapse is larger than hemorrhoid and has circular mucous membrane grooves, while hemorrhoid is radial mucous membrane grooves. 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 It is tough and elastic to touch. (4) Prolapse of the anal canal: occurs during defecation, covered by skin tissue, often accompanied by hemorrhoids and rectal prolapse. (5) Anal papillae hypertrophy: formed by the repeated stimulation of the anal papillae by chronic inflammation and the proliferation of fibrous tissue. It prolapses during defecation, and part of it can be retracted by itself, while part of it needs to be reset by pushing. 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, and polyps with tissues or larger polyps closer to the anus can be prolapsed during defecation and can be retracted by themselves, with mucous membrane on the surface, and when the mucous membrane is inflamed, the surface of the prolapsed material is congested, and some can be seen as villi-like protrusions, strawberry-shaped, some with tissues and some without tissues, often with bleeding symptoms. (7) Thrombosed external hemorrhoid: A sudden swelling located in the anal canal with obvious pain. When pressing the external hemorrhoid, there are hard nodes under the skin with purple color.