After surgery for an anal fistula, the general recovery time is about twenty days to a month. The duration of recovery mainly depends on the size of the local lesion before surgery, as well as the surgical wound postoperatively, and also relates to the patient's constitution. Particularly, if the patient has certain underlying diseases, such as diabetes or a history of tuberculosis, the recovery time may be relatively extended. The wound after an anal fistula surgery is an open wound contaminated with bacteria, so postoperative wound dressing changes are very important for wound recovery. It is recommended that the secretion from the local wound be cleared daily, followed by disinfection with povidone-iodine, then application of an anti-inflammatory ointment, and covering the wound with an oil gauze strip for drainage to avoid poor drainage leading to false healing of the local wound.