There is still pus and blood one month after perianal abscess surgery, which may be related to the wound not recovered, false healing, formation of anal fistula and other conditions. 1. The wound is not recovered: in the perianal abscess surgery, the abscess needs to be cut once, and then the inside of the decayed tissue and secretion removal, if the perianal abscess is relatively large, the incision will also be relatively large. The healing time will be prolonged accordingly. If there is no pain and swelling at the incision site, it can be considered as a sign that the wound is recovering. 2. False healing: although the surface skin tissue has healed, but the purulent secretions inside have not been completely discharged, will gather under the healing tissue, purulent secretions overflow, accompanied by local swelling and pain. 3. Formation of anal fistula: If the perianal abscess is not completely treated, it may form a tube in the middle of the surgical incision and the primary lesion, forming the symptoms of anal fistula, there will be purulent secretion overflow, anal moisture, anal itching and other symptoms. It is recommended that patients with the above symptoms, timely medical examination, a clear diagnosis, follow the doctor’s instructions to actively cooperate with the doctor to carry out the appropriate treatment, to avoid aggravation of the condition.