The symptoms of anal fistula, also known as anorectal fistula, are complex and difficult to treat, and many patients suffering from anal fistula are unable to pay attention to the disease. In fact, anal fistula can occur at a later stage without treatment, spurting blood and feces, and the condition is very disgusting. The actual fact is that you will be able to get a lot more than just a few of the most popular and popular items. The actual fact is that you can find a lot of people who are not able to get a good deal on a lot of things. Due to the irritation of the discharge, it can make the anus moist and itchy, and sometimes eczema can form. The following is a detailed explanation of the doctor’s explanation of the anal fistula can not be self-healing: Why can’t the anal fistula be self-healing? 1, the presence of the internal mouth: although the abscess broke or has been incised and drained, but the primary source of infection such as anal sinusitis, or anal gland infection still exists, the contents of the intestinal cavity can also continue to enter the fistula from the internal mouth; 2, the anal part can not be static, the pus cavity is not easy to bond: when defecation, urination, due to sphincter muscle contraction or due to inflammation stimulate the anal sphincter muscle, so that the anal sphincter muscle is often in spasm; 3, the intestinal cavity of feces, intestinal fluid and gas The fistula continues to enter the fistula and stimulate the wall, making the connective tissue of the wall thicken and make it difficult to close the lumen; 4. The first thing you need to do is to get a good idea of how to treat the fistula. This method also has the advantages of simple operation, less bleeding, convenient drug changes, and no skin incision adhesion before the rubber band falls off. 3.Anal fistula excision Cut open the fistula and remove all the fistula wall to healthy tissue without suturing the wound; if the wound is large, it can be partially sutured and partially opened, filled with oil gauze, so that the wound grows from bottom to outside until it heals. It is suitable for low level simple anal fistula.