The pain after anal fistula surgery may take about a week to get better, and the pain may last longer. Because anal fistula is a lesion that occurs in the anus, the local nerve is very rich, so after the operation, the patient will have very obvious pain in the perineum, especially in the first day after the operation, after the anesthetic drug metabolism is over, the local pain will be very intense, and you need to use some pain medication or painkillers to symptomatic treatment, so as to relieve the pain. Usually 2-3 days later, the local pain will gradually reduce, usually about a week after the operation, the local pain will be significantly relieved, but in the wound dressing, will also cause local pain and other uncomfortable symptoms, to wait until the wound is completely healed, the local pain can not be completely improved.