Rectal prolapse is generally divided into internal mucosal prolapse and external prolapse. External mucosal prolapse is commonly known as rectal prolapse, which falls under the category of proctological diseases. Therefore, patients who suspect they have rectal prolapse should promptly visit a proctology department for relevant examinations and treatment. The examination and diagnosis of rectal prolapse mainly involve digital rectal examination, anoscopy, and defecography to confirm the diagnosis. Especially for internal mucosal prolapse, which cannot be seen with the naked eye, defecography is necessary for differentiation. In cases of rectal prolapse, one can generally see a ring-like protrusion outside the anus, and in severe cases, there may be conical or cylindrical prolapse. Regardless of whether it is internal mucosal prolapse or rectal prolapse, surgical treatment is necessary.