Women undergoing anal fistula surgery first have to define the location of the fistula, and then perform anal fistula repair. Anal fistulas are usually caused by perianal abscesses that recur over a long period of time, abscesses that break down or incisions that don’t heal, and recurrent infections that lead to anal fistulas. Women may also have anal fistulas caused by childbirth. Fistulas often discharge a small amount of pus, bloody or mucous discharge or fecal matter from the vagina. Once a fistula is detected, it is important to go to the hospital to have the fistula examined and the location of the fistula clarified for surgery. Anal fistula can not be self-healing, must be surgical treatment. If the location of the fistula is low, feasible fistulotomy; fistula location is high, within 3-5cm from the anus, as well as complex anal fistula, can be hung line therapy. Women found that there is a fistula, need to check the location of the fistula in time to the anorectal department, a clear diagnosis, anorectal doctors will be based on the results of the examination to give the appropriate treatment.