1, Crohn’s disease anal fistula In the systemic treatment at the same time as possible to conservative treatment. Asymptomatic Crohn’s disease anal fistula does not require surgical treatment; low Crohn’s disease anal fistula is treated with fistulotomy. Mouth disease Ming medical treatment of fistulas with a detailed clinical history and localized above the deep muscle layer. Invasion of the puborectalis muscle complex Crohn’s disease anal fistula can be long-term virtual hanging line drainage for palliative treatment. If the rectal mucosa is largely normal to the naked eye can be used to push the rectal mucosal flap to close the inner mouth. 2, tuberculous anal fistula need to be combined with systemic anti-tuberculosis treatment (isoniazid, rifampin, ethambutol, streptomycin, etc.) with the local use of traditional Chinese medicine (including Chinese ointment and sitz bath), the components of which are: cypress, comfrey, amaranth, bitter ginseng, dahurica, angelica, alum, frankincense, myrrh, etc. 3, infant and child anal fistula superficial fistula is the main, there may be self-healing. If non-surgical treatment is not effective, incision can be chosen. Infant anal fistula is mainly low simple anal fistula, accounting for more than 90%. In infants and young children, multiple, large and deep surgeries should be avoided because of the underdevelopment of the anorectal muscles. The indications for surgery are: recurrent episodes within a short period of time (within 3 months), with a tendency to enlarge and complicate and the number of bowel movements <3 times/day. It must be agreed and confirmed by all family members.