After the colonoscopy is done, care should be taken to avoid increased abdominal pressure, eating according to doctor’s instructions, bleeding conditions, and bed rest. Just after the colonoscopy, the initial air will accumulate in the large intestine, the patient will have abdominal distension, abdominal discomfort, after a few hours the symptoms can gradually disappear. At this time, you should avoid lifting heavy objects, crowded buses, otherwise it will lead to increased abdominal pressure, but also cause abdominal pain, abdominal distension obvious. Tell the doctors and nurses in time to deal with the above situations. Without special circumstances, you can take the doctor’s advice to eat fluids, semi-fluids, and less crumbly food to prevent increasing the burden on the gastrointestinal tract. If persistent abdominal pain or blood in stool occurs after the examination, tell the doctor in time for treatment to avoid accidents. Take biopsy during colonoscopy should be absolutely bed rest, avoid strenuous exercise within 3 days, should also avoid doing barium enema examination. If polyp electrolysis is performed, it can be combined with the doctor’s opinion that it is necessary to prohibit eating for 2 days, and at the same time, intravenous fluids should be given. There is no blood in the stool or other discomfort before being discharged home.