The reason why the wound does not heal three months after anal fistula surgery may be related to the wrong timing of the operation, the patient’s poor physical condition, improper operation during and after the operation. The patient sinus tract has not yet formed and rushed to the anal fistula surgery, at this time can make the inflammatory reaction gradually spread so as to form a new sinus tract or abscess cavity, and further slow down the healing of the surgical wound. The patient is too weak or combined with diabetes, tuberculosis, leukemia or anemia and other chronic diseases, the wound may be difficult to heal for a long time after surgery. Gaps in the wound sutures or excessive tension in the sutures may cause the wound to be difficult to heal. Foreign bodies left inside the wound may be surrounded by surrounding granulation tissue, thus interfering with the normal healing of the wound. Inadequate treatment of the inner mouth during surgery, resulting in false inner mouth or failure to remove the infected sinus and primary lesions can lead to prolonged healing of the wound. If you find that the wound does not heal after surgery, you should consult a doctor in a timely manner, under the guidance of the doctor’s treatment, do not delay, so as not to delay the condition. Pay attention to rest on weekdays, quit smoking and drinking, and keep a regular routine.