Flesh in the anus is mainly due to hemorrhoids as well as perianal abscesses and anal papillomas. First of all, the most common is hemorrhoids, most of which are caused by impaired venous blood return around the anus, especially thrombosed external hemorrhoids, which can easily form venous thrombi or meatus around the anus. Secondly, the anal papillae are infected by bacteria or viruses and become hyperplastic or diseased, which can also prolapse from the anus and eventually form a fleshy mass with a longer root tip visible to the naked eye at the anus. In addition, perianal abscesses can also cause this phenomenon to occur. Acute inflammatory lesions of the lower rectal mucosa due to bacterial or viral irritation cause pus to leak out of the anus and form a mass around the anus. In addition to these causes, rectal prolapse and soft tissue hyperplasia around the anus can also cause the phenomenon of lumps around the anus.