A high level perianal abscess does not usually require plastic surgery after the hanging threads come off. The junction between the rectum and the anal canal has a ring of unevenness called the anal crypt also known as the anal sinus, if the infection here can lead to localized infection around the anus to form an abscess, if the abscess is formed after the formation of the anal canal and the formation of a sinus tract between the clinic is also known as an anal fistula, part of the patient’s fistula is located in the anus above the external sphincter muscle is called a high-grade anal fistula. Patients need surgery to remove the perianal abscess and fistula to achieve the goal of radical treatment, but can not cut off the anal sphincter, this time the need to perform the hanging line treatment, generally hang the line after about 14 days to fall off, if you can not fall off the need to go to the hospital to tighten the line or remove. Abscesses need to be removed to drain and fully open, while the internal granulation tissue will gradually grow outward, so the hanging line off generally do not need plastic surgery. If there is a high perianal abscess, it is recommended to go to the hospital in time to avoid aggravation of the condition; after the high perianal abscess operation, the patient should follow the doctor’s instructions for postoperative care and change the medication, and have a regular review, so as to promote the recovery of the wound.