Whether an intestinal polyp of 0.8 cm is serious depends on the type of pathology of the polyp. Benign polyps such as inflammatory polyps and hyperplastic polyps are not serious; while polyps with malignant potential and malignant polyps are more serious. Inflammatory polyps are caused by the inflammatory response to stimulate the intestinal epithelium, generally rarely have a tendency to malignant changes, to treat the primary intestinal disease. 0.8 cm hyperplastic polyps also do not cause obvious clinical manifestations, and generally do not require special treatment, but from the appearance of the difficult to distinguish from tumor polyps, so often in the colonoscopy will be removed under the biopsy. Adenomatous polyps have a certain risk of cancer, the larger the size, the higher the chance of malignant transformation, so after the discovery of timely resection under the colonoscopy, generally will not cause serious consequences. However, malignant polyps belong to intestinal cancer, there will be invasion and metastasis risk, seriously affecting the patient’s life and shorten the patient’s life expectancy, it is more serious, and need to be treated in time. Intestinal polyps 0.8 cm should go to the hospital in a timely manner, according to the doctor’s recommendations for the next step in the treatment.