After anal fistula surgery, sitz baths are clinically recommended for about 30 days, one to two times a day for 10 to 15 minutes each time. After anal fistula surgery, generally recommended sitz bath about 30, surgical wound basically healing needs about a month. If possible, it is recommended to adhere to the sitz bath after the wound is healed, which can improve the perianal microcirculation, avoid the recurrence of fistula and reduce the chance of perianal disease. Especially after the stool as much as possible sit bath cleaning, to avoid stool residue in the surgical wound, affecting the postoperative healing situation. Sitting bath after anal fistula surgery, pay attention to the water temperature can not be too high, so as to avoid scalding; sitting bath is recommended to carefully clean the surgical wound and disinfection and dressing treatment, in order to facilitate the growth of patients’ traumatic tissue, to prevent bacterial infections and so on. Patients with anal fistula surgery should combine their own wound healing status to extend the sitz bath time, if you feel uncomfortable, please consult a doctor in time.