High simple anal fistula is not particularly serious and the prognosis for the condition is favorable. High simple anal fistula that is, the fistula and the inner mouth of the outer sphincter deeper than, can appear intermittent swelling, pain, pus, itching and other symptoms. Clinically used anal fistula hanging line surgery for treatment, the operation is low risk, can avoid sphincter damage, anal incontinence and so on. After regular comprehensive treatment, most patients can recover. It should be noted that in the high simple anal fistula surgery to keep the bowel movement, you can eat more light and easy to digest food, avoid spicy and stimulating diet, avoid squatting for a long time, you can warm water sitz bath to ease the discomfort. It is recommended that once there is any discomfort timely to the hospital, clear the condition to choose the appropriate treatment program, so as not to delay the condition.