Hemorrhoids can be divided into three major categories, internal hemorrhoids, external hemorrhoids, and mixed hemorrhoids, depending on where they occur, and the symptoms of each type of hemorrhoid are also different, often bounded by the dentate line, with the following specific differences: 1. Internal hemorrhoids occur above the dentate line of the anal canal, with clinical symptoms of painless, intermittent bleeding, bright red blood, which can drip or spray blood, and the main symptom of a protruding internal hemorrhoid nucleus; 2. External hemorrhoids occur below the dentate line of the anal canal and External hemorrhoids are classified into four types, including inflammatory external hemorrhoids, thrombosed external hemorrhoids, varicose veins and connective tissue external hemorrhoids; 3.Mixed hemorrhoids are internal and external hemorrhoids that occur above and below the dentate line in the same orientation of the anus, and are internal and The general symptoms are painless, intermittent bleeding after stool, mainly dripping blood, in the middle stage there will be protrusion of internal hemorrhoid nucleus, followed by pain, swelling and other symptoms, in the later stage due to long-term protrusion of hemorrhoid nucleus or anal sphincter relaxation, there may be intra-anal discharge, the discharge may cause anal itching or perianal eczema if stimulating the perianal area, so mixed hemorrhoids in clinical often The clinical symptoms of mixed hemorrhoids often include both internal and external hemorrhoids.