Rectal-anal examination is not painful. Under normal circumstances, rectal-anal examination is not painful, if the patient has inflammation around the anus, anal fissure and other diseases, it is possible to stimulate the wounds around the anus to appear slight pain, but most of them can be tolerated and will not be very painful. Rectal-anal examination has two kinds of rectal fingerprinting and anoscopy. Rectal diagnosis, the patient should take the chest and knee position or lateral position, the doctor will wear gloves, to the index finger of the finger and the patient’s anus local lubricant, that is, paraffin oil, and then slowly insert the index finger into the anus, touch the perianal rectum with or without lumps, prostate smoothness, etc., if found to have anomalies need to be further examined. Anoscopy, the operation method is similar to the finger diagnosis, also in the application of lubricating oil, to the anus slowly into the anoscopy, because the anoscopy is thicker than the finger, so for anal stenosis or anal fissure symptoms of the patient may appear slight pain, the pain is generally tolerable. If the anal stenosis is obvious, anoscopy is prohibited. It is recommended that patients should have rectal-anal examination in regular hospitals, choose the appropriate examination method for themselves under the guidance of the doctor, and actively cooperate with the doctor.