Two months after the anal fistula surgery wound swelling pain inflammation may be due to the wound is not completely healed, perianal infection, anal fistula recurrence and other reasons. The wound is not completely healed should adjust the diet to supplement the required nutrients, perianal infection can be used under the guidance of the doctor erythromycin ointment, anal fistula recurrence using mupirocin ointment and other drugs. 1. The wound is not completely healed: two months after the anal fistula surgery wound swelling and pain is due to the wound is not completely healed, the patient should pay attention to a light diet, eat protein-rich foods to supplement the body’s nutritional needs. 2. Perianal infection: two months after anal fistula surgery wound swelling pain is caused by perianal infection, can be used under medical supervision erythromycin ointment, tetracycline ointment and other drugs to smear treatment, allergy patients are prohibited. 3. Anal fistula recurrence: anal fistula recurrence may appear around the anus with lumps, purulent discharge, pain and other symptoms, can be used under medical supervision mupirocin ointment, lidocaine gel and other drugs treatment. It is recommended that patients go to the hospital regularly for rechecking after surgery, and pay attention to a light diet at the same time.