Transendoscopic colorectal polypectomy, because of the thin colorectal wall is a high-risk surgery, postoperative trauma local thinning, how to postoperative care is not possible to late postoperative bleeding or perforation. Precautions: 1, after surgery can not be pressurized exhaust: because the process of colonoscopy treatment, the operation time is long, inject a certain amount of gas, and the colon around the abdominal cavity a week, squeeze easy to gather gas in a section of the intestinal tube, so, should be natural exhaust to relieve postoperative abdominal distension. Pressure by hand or abdominal muscle pressure may lead to intestinal perforation or bleeding. 2, 2 weeks to limit exercise: can not be strenuous exercise or strenuous exercise. 3.Diet within 2 weeks is based on thin and soft meals: liquid or semi-liquid, vegetables and fruits can be ingested in small amounts. Avoid eating tobacco, alcohol and spicy things. Do not eat drugs that promote intestinal peristalsis. 4.Keep good emotion: over-excited emotion is easy to induce perforation or bleeding. 5.Patients who have oral anticoagulant drugs should stop taking them for 2 weeks after surgery.