Nowadays, people are living in excellent conditions and can say that they are well fed and clothed, but the only thing they are worried about is their health. It is undeniable that many people are now in a state of sub-health, so people with a little health awareness will regularly go to the hospital for medical checkups, in order to be able to find problems early, early solutions to avoid serious illness, this health awareness is very good, worth learning. In the process of physical examination, there are many cases that require colonoscopy, and in the process of colonoscopy, a significant number of people are detected to have colon and rectal polyps. Those who do not know the truth are afraid of colon cancer, so they are worried, but after the doctor’s explanation, they will be enlightened that colon polyps do not necessarily lead to colon cancer. This can be analyzed from the following aspects: a. What is colon and rectal polyp? It refers to the protruding bulging lesions on the mucosal surface of the colon and rectum to the intestinal cavity, which is a common and frequent disease in gastroenterology. That is, any polyp-like lesions protruding from the mucosal surface to the intestinal cavity, before the pathological nature is not determined are called polyps. Second, the classification of colon and rectal polyps: 1, tumor polyp, including tubular adenoma, villous adenoma, tubular villous adenoma, of which the highest rate of cancer of villous adenoma. 2.Non-neoplastic polyps include hyperplastic polyps, misshapen polyps and inflammatory polyps, which are less likely to become cancerous. Third, pathological examination Polyp is actually just a morphological description, which includes a variety of completely different pathological types and is caused by different reasons. It is very important to know the pathological type of polyps because different pathological types of polyps cause different consequences. Some polyps grow slowly and do not cause discomfort to the patient and are not cancerous, so they can be observed on follow-up and do not necessarily need active treatment, while some polyps are at risk of cancer and should be removed. Therefore, it is clear that polyp in colonoscopy is not necessarily caused by colon cancer. However, some colon polyps do have the possibility of cancer. It still needs to be taken seriously. Because more than 90% of colon cancer is transformed from colon polyps, small polyps → large polyps → severe atypical hyperplasia → carcinoma in situ → invasive cancer, the malignant process usually takes 5-10 years (of course there are a few cases with faster progress).