Recurrence of anal fissure after surgery can be treated by conservative treatment and surgery. 1. Conservative treatment: when the degree of anal fissure is low after recurrence, patients can give priority to conservative treatment; use nitroglycerin ointment to apply locally under doctor’s guidance, take 1:5000 potassium permanganate solution sitz bath, and also can be equipped with anal dilatation, which is very good for the mild anal fissure treatment effect. 2. Surgical treatment: if the recurrence of anal fissure is more serious, and the effect is not obvious after conservative treatment, it is necessary to carry out surgical treatment again, such as anal fissure resection; patients should do a good job of nursing after the operation, to ensure the local hygiene, to avoid infections, and at the same time, do not consume stimulating spicy food, pay attention to the diet of light, to keep the stools smooth to prevent constipation, diarrhea, and so on. Patients in the anal fissure surgery after the emergence of adverse symptoms, to timely medical treatment, not blindly self-medication.