Generally speaking, it is normal to have some bleeding after anal fistula surgery. But a large amount of bleeding is not normal. In current clinical practice, there will be a certain amount of bleeding after anal fistula surgery, because the anal fistula wound is exposed, by pulling, friction and other influences, there will be a small amount of blood in the defecation; it may also be because the wound is not completely healed, in the process of granulation tissue growth and thus there will be blood seepage, but these belong to the normal phenomenon, in the wound slowly recovered, the bleeding will stop. If the bleeding is large, it may be due to incomplete hemostasis during the operation, or the wound has new cracks and other reasons, which is not normal, and may need the doctor to give treatment or another operation to stop bleeding. After anal fistula surgery, we should pay attention to keep the anal area clean and dry, regular medication change on the affected area, light diet, pay attention to rest, in order to facilitate the recovery of the condition. For people with the above symptoms, it is recommended to consult a doctor in time to identify the cause of the disease and treat it as soon as possible.