There are two main reasons for the reappearance of perianal abscess after one month of surgery for perianal abscess, one is that the first perianal abscess is a deep abscess and the pus cavity is not completely removed; the other is the pseudo-healing of the incision wound after surgery. Perianal abscess is divided into superficial abscess and deep abscess, superficial abscess drainage is good, postoperative recurrence rate is small, for deep abscess, especially in local anesthesia under abscess surgery, due to the division of abscess, abscess location is deep, abscess drainage is not complete, postoperative abscess will form again. After surgery for perianal abscess, the wound is open, the healing is gradually from the base to the surface, the incision grows tightly, and it is not easy to form an abscess again. If after surgery, the drainage of the abscess is not sufficient, the epidermis heals and the deep tissues don’t heal, forming a pseudo healing, which will lead to the formation of an abscess again. Once diagnosed with perianal abscess, it is recommended to go to a regular hospital as soon as possible, to clarify the cause of the disease, and to give surgery to completely remove the treatment. After the operation, we must actively cooperate with the doctor, follow the doctor’s instructions, and not be careless, so as to avoid prolonged treatment, which will bring adverse effects on the body.