The main manifestation is the prolapse of a lump from the anus, which is small at the beginning or only discovered during defecation, and can be returned after defecation, but as the number of defecation increases, the lump gradually increases in size and frequency, and needs to be returned to the anus by hand after defecation. There is a feeling of incomplete defecation or discomfort of falling. In severe cases, the mass may prolapse when standing for a long time, coughing or when the abdominal pressure increases, and the sensation of anal incontinence may appear, and due to prolapsed rectal mucosa and increased secretion for a long time, the anus may become moist and unclean, and the symptoms of anal eczema may appear. It can also be accompanied by symptoms of constipation, unclean bowel movements and increased frequency of stools, which can be diagnosed by visual examination or anoscopy in general, and requires timely consultation at the anorectal department of a regular hospital.