After squatting, the anus protrudes, mainly need to consider is internal hemorrhoids, rectal polyps, rectal prolapse and other anorectal diseases caused by something out of the anus caused by. Internal hemorrhoids refers to occur above the dentate line, due to the rectal mucosal surface venous plexus varicose veins to form varicose masses, the development of the third stage, hemorrhoidal nuclei will often prolapse outside the anus and need to be manually returned to the internal hemorrhoids patients squatting will cause a short period of time rapid rise in abdominal pressure, resulting in the nucleus of hemorrhoids prolapse, and other such as coughing, sneezing, defecation and so on, may result in such symptoms. Rectal polyps, especially the development of lower location close to the dentate line of the rectal polyps, due to the development process of the volume of gradually expanding, squatting anal pressure increases, may also cause polyps to the anus protruding outside, resulting in the phenomenon of the anus protruding. In addition, rectal prolapse patients in squatting, rectal mucosa may also partially or completely out of the anus, the formation of protrusion.