Anal finger test is fine, whether need to do colonoscopy, to combine the actual situation of the patient. 1. If the patient’s anal finger test report symptoms, the condition of the patient without the appearance of special symptoms. Generally do not need to do colonoscopy. 2. If the patient has some symptoms, such as, abdominal pain, diarrhea, constipation, blood in the stool, persistent weight loss, etc., it is necessary to do a colonoscopy to clarify the diagnosis. Anal finger test: can check whether there are hard nodules around the anus as well as swelling, to check whether there are fistulas under the skin outside the anus and so on; at the same time, it can also be used to check rectal polyps, internal and external hemorrhoids, anal fistula, anal fissure and so on. Colonoscopy: can directly observe the colon mucosa whether there is congestion, edema, erosion, lumps, polyps and other lesions, but also check to detect colon cancer and other cancers. Whether the patient needs to do colonoscopy or not, professional doctors need to make a decision according to the analysis of the condition.