Rectal polyp is a piece of grayish greyish brown tissue seen by naked eye, size 0.8 x 0.6 x 0.4 cm may be caused by inflammation, environment, diet, family heredity and other factors. Rectal polyp is a proliferative disease that manifests itself as an elevation of the mucosal surface of the rectum, the cause of which is unclear and may be related to family heredity, environment, diet, intestinal inflammation, and other factors; a piece of grayish greyish-brown tissue with a size of 0.8 x 0.6 x 0.4 cm seen by the naked eye of a rectal polyp is the general manifestation of rectal polyp biopsy. The severity and treatment of rectal polyps may vary depending on the type of tissue; inflammatory polyps and hyperplastic polyps have a low likelihood of becoming cancerous; adenomatous polyps have a high likelihood of becoming cancerous and belong to pre-cancerous lesions; rectal polyps measuring 0.8×0.6×0.4cm can be removed endoscopically, while adenomatous polyps should be reviewed regularly to prevent recurrence. Rectal polyps should be treated promptly, and the doctor should choose the appropriate treatment after examination and evaluation, and follow the doctor’s instructions to avoid delaying the condition.