Colon polyps are a common and frequent disease in China, and the theory of the evolution of adenoma-colorectal cancer of colon polyps is now widely accepted in academia. Studies have shown that the incidence of colon cancer in patients with colon polyps is five times higher than that in patients without colon polyps. Colon polyps and colon cancer have similar clinical symptoms, and nearly 3/4 of colon carcinomas develop from colon polyps. Colon polyps are divided into four categories: tumorigenic, malignant, inflammatory and proliferative. The common clinical manifestations are: 1. blood in the stool; 2. change in bowel habits, or in some patients, diarrhea or alternating diarrhea and constipation. 3, abdominal pain, abdominal pain can be hidden pain, intermittent colic, etc. Colonoscopy is the main means of examining colon polyps, not only through direct observation of large intestinal mucosal lesions, but also tissue biopsy and cytological examination to determine the nature of the lesions. Once a polyp is found, the entire polyp can also be removed endoscopically and a pathology slide can be performed to determine the type of polyp. Clinical trials of the U.S. Polyp Study and formal clinical practice by many physicians have shown that total colonoscopy and polypectomy can significantly reduce the incidence of colorectal cancer and mortality. Colonoscopic polyp removal is now used as the method of choice for the treatment of GI polyps, with low complications and no anesthesia, avoiding cesarean surgery, less injury, less pain, and suitable for all populations including the elderly and infirm or infants. Common techniques include high-frequency electrocoagulation excision, laser coagulation, microwave coagulation, argon knife and other methods. Since colon polyps, especially adenomas, have been recognized as precancerous lesions of the colon, the treatment of colon polyps should be taken seriously for your health. Moreover, we should pay special attention to the high recurrence rate after polyp removal (foreign reports range from 13% to 86%), so regular follow-up of patients with intestinal polyps has been mentioned as a high level of prevention and treatment of early colorectal cancer. In order to maintain a polyp-free colon, follow-up after polypectomy is very important. Colonoscopy is usually performed within 3-6 months after polypectomy and periodically thereafter according to medical advice. During the colonoscopy review, once polyps are found, they are removed endoscopically. Of course, not all colon polyps are suitable for endoscopic treatment, the following are contraindicated: 1, there is a contraindication to endoscopy; 2, diameter greater than 2 cm polyps and adenomas without a tip; 3, multiple adenomas and polyps, confined to a certain part of the dense distribution, the number of large; 4, familial adenomatosis; 5, endoscopic morphology has obvious malignant; 6, patients with uncorrected coagulation disorders. If these conditions exist, prompt surgical treatment should be considered.