Hanging thread method of treatment of anal fistula, usually through the silk thread, stranded wire, rubber band ligation fistula wall, so that it is slowly dissected and cut, so as to achieve the effect of treatment. Hanging wire therapy is to act on the fistula of the external sphincter deeper and puborectalis muscle above the high anal fistula, the use of rubber bands pulling, stretching, on the anorectal ring to form a chronic cutting effect, but also play a role in drainage, you can avoid damage to the anal sphincter, the phenomenon of urinary incontinence. Anal fistula may be caused by anal injury, infection, perineal surgery and perianal abscess history of the person and other factors, usually will appear anal local pus, swelling and pain, lumps, itching and other symptoms. If you suffer from anal fistula, in your daily life, you should pay attention to rest, appropriate exercise, avoid exertion, keep the skin around the anus clean, keep the bowel movement, if necessary, can go to the hospital in time for medical treatment.