The duration of pus flow after perianal abscess incision and drainage mainly depends on the size of the abscess cavity. During this period, we need to pay attention to local wound dressing change and drainage, we can choose to place oil gauze in the wound to promote drainage, if the abscess cavity drains smoothly, the wound will heal faster. If the abscess cavity is large or deep, drainage tubes can also be placed. Simple incision and drainage of perianal abscess may form an anal fistula, which requires further secondary surgery, mainly the choice of anal fistula incision and hanging. If perianal abscess is acute during an attack, it is best to perform a one-time radical surgery for perianal abscess directly.