Ninety-five percent of colorectal cancers are transformed from colorectal polyps step by step. This process usually takes 5-10 years, but individual differences vary. Because they generally have no clinical symptoms, only a small percentage of patients with intestinal polyps clinically present with abnormalities such as blood in stool, mucus stool and abdominal pain, and these symptoms often lack specificity, so to confirm the diagnosis of intestinal polyps, we have to rely on instrumentation such as colonoscopy. A colon polyp is actually a bulging lesion on the surface of the intestinal mucosa, commonly referred to as a lump of flesh growing in the intestinal canal. Since the 1970s, due to the advancement of endoscopy, X-ray, ultrasound and other examination techniques, the detection rate of GI polyps has greatly increased. Case sharing: Ms. Zhou, who had blood in her stool twice six years ago, started to be very nervous and worried that she had rectal cancer. Colonoscopy revealed that it was a sigmoid polyp with two pieces. After excisional biopsy, it was a benign adenomatous polyp. The doctor advised to review the colonoscopy regularly. Ms. Zhou did not have any blood in the stool after the surgery, so she forgot about the doctor’s instructions. Six years later, she had blood in her stool again and came to the hospital for examination and found that the polyp had recurred and become cancerous. Ms. Zhou’s case reflects that some people still have the mentality of fluke or avoidance: they do not pay enough attention to colonoscopy, fear or refuse to undergo colonoscopy, and are unwilling to be reviewed after polypectomy, so that colon cancer that can be prevented is not prevented. Removal of colon polyps can stop the occurrence of colorectal cancer polyps can recur, regular review is needed to summarize some general knowledge about colon polyps: 1. Therefore, colorectal adenoma should be treated as early as possible. However, not all adenomas are cancerous, so there is no need to be blindly nervous; 3. The most common endoscopic treatment for polyps is electrodesection, which is routinely performed in most large hospitals and is generally very safe. However, according to the polyp site, size, shape, pathology type and so on, the operation difficulty is different and the risk is also different. After polyp removal, pathological examination should be sent to further clarify the nature of the polyp and whether it is completely removed; 4. The most worried risks include: bleeding, perforation, incomplete polyp removal, cardiovascular accidents, etc. Sometimes additional surgery is needed; 5. There is no drug to prevent or treat polyps, the most effective way is to review the colonoscopy or barium enema regularly, and once polyps are found, remove them in time. The specific review time, the individual situation is different, need to doctor according to each person’s situation comprehensive judgment.