The best anal bleeding to hang anorectal department, because the hospital is now divided into anorectal department is for the anal canal around the anus and rectal disease research, mainly for the part of the disease, to the anorectal department doctor will do professional anorectal examination. Anal bleeding is divided into two types of bleeding: the first, is bright red bleeding, generally bleeding location is in the vicinity of the anus, do anoscopy or proctoscopy will be able to clearly diagnose. This kind of bleeding is often the result of internal hemorrhoids, anal fissures or rectal polyps, which can be treated conservatively or surgically with better results. Secondly, if the anal bleeding is dark red bleeding or black, it needs to be combined with e-colonoscopy or gastroscopy, which may be upper gastrointestinal bleeding or upper colon bleeding, and further examination is needed to make a clear diagnosis.