The treatment of subcutaneous anal fistulae depends on the type of fistula, some of which are simpler and others more complex. An anal fistula is a granulomatous tube around the anal canal and rectum, which is mainly composed of three parts: the internal opening, the fistula, and the external opening. Long lasting or intermittent recurrence is one of its characteristics. It is mostly seen in young men. Special attention is paid to the complexity of the anal fistula in anorectal surgery is considered one of the intractable diseases. The treatment of anal fistula is mainly divided into two kinds, one is the blockage method, and the other is surgical treatment. Surgical treatment methods are fistulotomy is to cut the whole fistula, the lumen will be exposed, relying on the growth of granulation tissue to let the wound heal, hanging line therapy is the use of rubber bands or corrosive effect of the pressure of the medicinal line of the cutting effect of the fistula, slowly cut. Fistulotomy is the direct removal of the fistula. Therefore, it is recommended that once diagnosed with anal fistula, patients should go to the hospital in time, according to the individual condition, professional doctors will give specific treatment plan. Anal fistula can not be self-healing, the sooner the treatment is given, the less damage to the body.