Anal fistulas do not heal on their own when they form and require surgical treatment. If patients do not undergo treatment, they will have repeated episodes of perirectal-anal abscess, and even develop into cancer. The main treatment methods are anal fistula incision, anal fistula resection, hanging line therapy, fistula resection one-stage suture and so on. 1. anal fistula incision: for low anal fistula. Surgery, the whole fistula cut, so that the growth of granulation tissue to achieve healing. Because of the low anal fistula fistula is located in the external sphincter deep below, after the cut generally will not appear serious anal incontinence. 2. Hanging wire therapy: suitable for high anal fistula or elderly patients with a history of anal surgery and anal sphincter dysfunction. This method is the use of rubber bands or corrosive ability of the mechanical compression cutting effect of the medicinal line, slowly cut the fistula. This method generally does not cause severe anal incontinence and has a low recurrence rate. 3. Anal fistula excision: suitable for low anal fistula with hard wall. Cut the fistula and remove all the fistula wall to the healthy tissue, the wound is not to be sutured. If the wound is large, it can be partially sutured. 4. Fistula excision one-stage suture: applicable to simple or complex low anal fistula. For patients diagnosed with anal fistula, should be as soon as possible to the relevant departments of the regular hospital, under the guidance of a professional physician for treatment, so as not to delay the condition and lead to adverse consequences.