The medication needs to be changed every day within two weeks after perianal abscess surgery, especially the gauze should be changed in time after stooling. Because it is an infectious surgery, most of the abscess cavity can be significantly reduced after two weeks, and the purulent discharge will be reduced and sometimes even disappear, so the medicine can be changed once in 1-2 days, or even once in 1-3 days for mild cases. The requirements for changing medication for perianal abscess are relatively strict, each time the abscess cavity must be repeatedly scrubbed with iodophor swabs, cleaned of secretions, reinserted into the gauze for drainage, and wrapped with sterile gauze externally. The change of medicine for perianal abscess must be operated by professional medical personnel, and patients should usually eat more fresh vegetables and fruits, drink more water to help the recovery of the disease, and eat more nutritious food is also conducive to the growth of the surgical opening. So it is necessary to change the medication after the perianal abscess, and it must be done in a timely and serious manner.