During colonoscopy, painless colonoscopy and ordinary colonoscopy have their own advantages and disadvantages, and should be chosen according to their own situation, there is no such thing as which one is better. 1. Enteroscopy mainly involves the use of enteroscope to enter the rectum and colon through the anus to observe whether the intestinal mucosa has inflammation and occupying lesions, etc., which may cause pain and discomfort in the process of operation. 2. There are two types of colonoscopy, one is painless colonoscopy and the other is ordinary colonoscopy. (1) Painless colonoscopy is carried out by using anesthesia on the basis of ordinary common, the advantage is that the patients mostly have no pain and uncomfortable symptoms, and the examination can be completed during sleep, but the cost is relatively high, and there will be a certain amount of anesthesia risk at the same time. (2) General colonoscopy generally patients will feel pain, discomfort symptoms, but the cost is relatively low. To summarize, both examinations have advantages and disadvantages, and need to be selected according to their own conditions combined with the doctor’s recommendations.