It is best to wait until the trauma is completely healed before having intercourse after anal fistula surgery, depending on the severity of the fistula and the recovery of the individual. The healing time of the postoperative incision is about 2-4 weeks for general anal fistula surgery, and 2-3 months or more if it is a complex high anal fistula. Since the pelvic floor muscles become engorged with blood during intercourse, which increases the tendency of bleeding from the anal fistula incision, hemorrhage is a more serious postoperative complication for anal surgery and can delay wound healing or cause more serious complications of disease. In addition, after the surgery, the patient’s physical condition will be reduced, the wound will appear oozing, pain and other symptoms, if this time intercourse, will affect the quality of intercourse, and at the same time if too much force will also cause the wound to tear again. Therefore, it is recommended that patients pay attention to maintaining local hygiene after surgery and use warm salt water or 1:5000 potassium permanganate sitz bath before and after intercourse to avoid the existence of pseudo-healing and causing wound re-infection.