Determination of high versus low perianal abscess can be identified by anatomical structure and clinical presentation. Anatomically, those below the anorectal ring are called perianal abscesses low grade. Above the anorectal ring, it is called high perianal abscess. According to the clinical manifestations, high abscess generally refers to the abscess of the pelvic rectal space, the location is deeper, and the patient manifests systemic symptoms of infection and toxicity, such as an elevated body temperature of more than 38.5 degrees. Low abscess generally refers to the sciatic-anal interstitial abscess, the patient manifests local redness, swelling, heat and pain. Perianal abscess will touch the fluctuating sensation by rectal palpation, and need surgical incision and drainage or application of antibiotic treatment. It is recommended that patients with any discomfort in the perianal area should consult a doctor in time, make a clear diagnosis, and actively treat under the guidance of a professional doctor to avoid delaying the condition.