In general, rectal flat polyps are not serious. Rectal flat polyp is a common clinical benign tumor of the intestines. In most patients, the polyp can be completely removed and the disease eradicated through endoscopic mucosal resection or endoscopic mucosal dissection under colonoscopy, which will not affect the patient’s normal life expectancy. Although active treatment of rectal flat polyps can cure the disease, but it should be noted that some of the patients are not timely treatment, with the passage of time, the polyp may undergo malignant transformation, which is a more serious situation. It is recommended that patients go to the gastroenterology department of the hospital as soon as possible, improve the relevant examination, and receive treatment under the guidance of professional doctors.