If the internal hemorrhoid is prolapsed from the anus, if there is embeddedness, swelling, pain, necrosis, etc., it is generally necessary to carry out local treatment before colonoscopy; if the symptoms of internal hemorrhoid prolapse are not serious, or even there are no symptoms, colonoscopy can be carried out in general. Colonoscopy for the anal area has a certain degree of stimulation, if the internal hemorrhoid ball prolapse anus, and accompanied by incarceration, swelling, pain, necrosis, etc., at this time for colonoscopy, may be rubbing the inflammation of the hemorrhoids, thereby increasing the patient’s pain, so at this time it is not recommended to carry out colonoscopy. If the internal hemorrhoids meatball out of the anus must be confirmed through the colonoscopy whether the intestinal lesions, can be in the physician’s advice for painless colonoscopy.