There is no minimally invasive surgery for anal fistula, and common surgeries include fistulotomy, fistulotomy, and hanging wire therapy for treatment. 1. Fistulotomy: the fistula is cut throughout the whole process, revealing the lumen, relying on the growth of granulation tissue to make the wound healing method, suitable for low anal fistula, because the fistula is below the deep outer sphincter, cut the damage to the outer sphincter subcutaneous and superficial, usually does not appear after the operation of the serious anal incontinence. 2. Fistulotomy: cut the fistula and remove all the fistula wall until the healthy tissue, the wound does not need stitches, if the wound is larger, part of it can be stitched, part of it can be open, so that the wound grows outward from the bottom to the healing, applicable to the low simple anal fistula. 3. Hanging wire therapy: mainly the use of rubber bands or corrosive effect of the medicinal line for mechanical compression cutting, slowly cut the fistula, the wound from the bottom of the gradual growth of the sphincter to reduce the damage to the sphincter, applicable to the distance from the anus 3-5cm, there are inside and outside the mouth of the low or high simple anal fistula as a complex fistula incision, excision of the adjuvant treatment. It is recommended that patients go to a regular hospital in time, under the diagnosis of a professional doctor, according to the patient’s condition, to take targeted treatment, life should pay attention to perianal cleanliness, to avoid infection.