After surgery for perianal abscess, it is usually enough to change the medicine once a day, if there is oozing and other reasons due to contamination of the dressing, it is necessary to change the medicine again to keep the wound clean. Perianal abscess is mainly manifested as swelling and pain around the anorectal area, palpable lumps, some people may be accompanied by fever, fatigue and other manifestations. Surgical drainage is the most basic treatment for perianal abscess. A dressing change is required on the first day after surgery and every 1-2 days thereafter until the wound heals. However, if the wound dressing is soaked with exudate such as blood, pus, etc., or the drainage tube does not drain well, it is necessary to change the dressing in time, and the specific number of dressing changes needs to be flexible according to the condition, so as not to cause poor healing. Medication changes should be performed by a professional clinician and should not be done without authorization. Regular follow-ups will reduce the chance of recurrence.