How long it takes to see the false healing of anal fistula is indeterminable, it mainly depends on whether the postoperative care is proper or not, improper care may appear in about 12 days; proper care generally does not appear. False healing after anal fistula surgery is mainly related to improper postoperative care and other reasons, only when improper care after anal fistula surgery, false healing will occur, usually in about 12 days; if the care is in place, generally does not appear false healing. If false healing occurs after anal fistula surgery, it will be manifested as local redness, swelling and pain, in addition, there may be pus after ulceration. The healing tissue should be propped up or surgically treated as soon as possible to ensure that the normal tissue grows upward from the bottom to promote wound recovery and facilitate the development of the disease, and pay attention to a light diet in daily life to avoid spicy and irritating food intake and reduce the stimulation of the surgical wound. If you have any symptoms of physical discomfort, you should go to the hospital in time and consult your physician for guidance.