The anal test examination is one of the medical examinations to check whether the human body has infectious diseases such as typhoid fever, and also to check whether the human body has parasitic diseases, and whether it has anal or rectal diseases. Anal examination includes anal visual examination, anal finger examination, rectal finger examination, and anoscopy. Anal visual examination can observe whether there are abnormal swellings and superfluous organisms in the anus, and whether there is local redness and swelling in the anus. Anal finger examination is to find out whether there are abnormal masses by touching the anus. The rectal finger test is to check the tightness of the anal sphincter, to make a preliminary judgment of the location and size of internal hemorrhoids, and also to check whether there are abnormal swellings and polyps growing in the lower end of the rectum. The anal test can also check for parasites in the anus, and is usually used to check for pinworms. The anal test is one of the medical examinations that should be done in the course of the medical examination to detect diseases in the anal area in time for early detection and treatment.