The number of gauze changes for abscess incision and drainage should be based on the specific situation of pus exudation. If the incision wound is small and the pus exudes little, it is usually changed once in 3 days; if the wound is large and exudes a lot, it needs to be changed once a day. 1. Less exudation: abscess incision and drainage is to cut the abscess mass, remove the pus in the pus cavity, place the drainage strip to continue to drain, small abscess drainage fluid is less, the routine is usually about 3 days to change the gauze, change the gauze should pay attention to the principle of asepsis, to avoid infection of the abscess, prolong the recovery time. 2. Exudate more: for large pus bags such as sebaceous cysts caused by infection, this infection pus cavity is deeper, the wound is large, more drainage fluid after surgery, usually about a day or so need to be infiltrated gauze change, at the same time oral antibiotics to treat the infection, such as levofloxacin, to speed up the speed of recovery. For abscess incision after surgery should pay attention to the cleanliness of the gauze, good care, so as to avoid the progress of the disease.