There is no obvious sign of healing of anal fistula, as long as the fistula does not recur within 3 months after surgery, it means that the internal opening has healed. Surgical treatment of anal fistula is mainly from the external insertion of the probe, and then in the anus to find the internal opening, sufficiently outward incision, and then completely remove the fistula tissue, the wound should be completely open, daily wound dressing, and then inserted into the wound drainage strips, you can avoid the formation of pseudo healing of the wound, and so on, until the bottom of the wound fresh granulation tissue slowly grows outward, completely flat, indicating that it has been completely healed. As to whether the surgery is successful or not, some experts and professors agree that as long as there is no recurrence within 3 months after the surgery, it means that it has been completely cured. In the post-surgical treatment process, do not drink alcohol, do not eat onions, ginger, garlic and other spicy, stimulating food, every day after the bowel movement to use warm water sitz bath for a few minutes, to keep the wound clean, is conducive to the rapid healing of the wound.