After anal fistula surgery, if the constipation is more serious, you can use Kerosene. After anal fistula surgery, constipation, mainly due to the existence of incisions around the anus, because of the fear of defecation when the stool stimulates the incision to produce pain and thus inhibit the desire to produce, after anal fistula surgery, the patient should eat more vegetables, fruits, to keep the bowel movement, drink more water. If the constipation is more serious, you can follow the doctor’s instructions to use Kesler to help relieve, but need to pay attention to the operation carefully, so as not to bruise the anus or rectal mucosa. After anal fistula surgery should pay attention to diet, perianal skin, postoperative defecation care, should pay attention to diet light and easy to digest food, such as radish, winter melon, loofah, etc.; follow the doctor’s instructions for dressing changes, timely flushing of the wound; postoperative should also control the number of bowel movements, to cultivate the habit of daily bowel movement at regular intervals, moderate exercise, if any discomfort, should consult a doctor in a timely manner.