Anal fistula half a year without recurrence may be a healing performance, need to go to the hospital in time for examination, to clarify the specific situation. As there is no clear time limit for how long it takes for an anal fistula not to flare up to be cured, some anal fistulas have a long interval between flare-ups, even up to six months or more. But most of the treatment for more than three months without attack, the probability of later attack will be reduced. If the anal fistula for more than three months does not attack, most are considered to have been cured, but this is not absolute, but also should be combined with the specific situation, and always monitor the discomfort of the symptoms. Although fistulas are usually not self-healing, a very small percentage of fistulas, especially subcutaneous fistulas, can be self-healing due to epithelialization of the fistula in the course of repeated episodes.