Rectal polyps belong to the rectal mucosal elevated lesions, according to pathological examination, mainly including hyperplastic polyps, inflammatory polyps, misshapen polyps and adenomatous polyps malignant, the first three kinds of malignant probability is very low, adenomatous polyps malignant change is more likely. Smaller adenomatous rectal polyps are rarely malignant, but the probability of malignancy increases as the diameter increases. Adenomatous rectal polyps greater than 2 centimeters in diameter have been reported to have a 50% chance of malignancy. Hyperplastic polyps, inflammatory polyps, and misshapen polyps are mostly devoid of heterogeneous cells, and the probability of malignancy is extremely low according to clinical statistics; adenomatous polyps are pre-cancerous, with cellular heterogeneity. Adenomatous polyps are precancerous lesions with cellular heterogeneity, and are basically resected in a timely manner after detection of the corresponding lesions. In the process of colonoscopy found polyps larger or adenomatous polyps, need to be under the guidance of the clinician for resection treatment.