The hardness of the wound after perianal abscess surgery may be caused by the short time after the surgery, the peripheral inflammation has not been eliminated and absorbed, or it may be scar formation and recurrence of the disease. 1. Inflammatory reaction: the hardness of the wound after perianal abscess surgery is a normal postoperative manifestation, is due to the inflammatory reaction has not been completely eliminated, caused by absorption, usually half a month after surgery can disappear, you can use 1:5000 potassium permanganate solution sitz bath, promote blood circulation around the wound, and promote the absorption of lumps. 2. Scar formation: perianal abscess surgery will form an open wound, due to the wound local granulation tissue proliferation, wound healing after the formation of keloid tissue, especially keloid patients, easy to form keloid hyperplasia after surgery, resulting in hard wounds. 3. Recurrence: Because perianal abscess itself is an infectious disease, if the post-surgical care is not appropriate, may lead to recurrence of the disease again abscess, then the wound will be hard, accompanied by persistent pain, restlessness and other symptoms, you can take oral antibiotics amoxicillin capsule and other medications, serious need for surgical treatment. The above situation, it is recommended to go to the regular hospital in a timely manner, clear causes under the guidance of the doctor for treatment, do not self-medication in order to avoid causing adverse effects.