After undergoing anal fistula surgery, surgical wound drainage with gauze plugs usually takes between 15 and 30 days. After anal fistula surgery, the wound will be drained through the use of gauze plugging, so as to make the wound drainage, the time of gauze plugging usually depends on the recovery of the wound. Surgical wound recovery can stop plugging gauze, if the patient’s health is good, the wound is shallow usually need about 15 days. If the patient is in poor health and the wound is deep, it may take about 30 days. After anal fistula surgery, patients should follow the doctor’s instructions, regular medication changes, change gauze treatment. If discomfort occurs during treatment, the gauze can be removed earlier at the hospital. In the postoperative period, patients should pay attention to a light diet, to avoid constipation and other situations. There is a possibility of recurrence of anal fistula, patients in the cure, should improve the bad dietary habits, as far as possible to avoid recurrence, such as discomfort should be timely medical treatment to avoid aggravation of the condition.