Oil gauze is Vaseline gauze, which is coated with petroleum jelly, mainly can play the role of compressing and stopping bleeding, clearing drainage and stimulating the growth of granulation tissue on the trauma, or preventing the gauze from sticking to the trauma. After abscess surgery, because the abscess cavity is large, there may be oozing and blood seepage inside the wound, so it is necessary to fill the wound with Vaseline gauze for compression and hemostasis, and it can also play the role of drainage, so that when there is pus seepage inside, it can be drained outside through the gauze. If the inflammation subsides, the purpose of using Vaseline gauze again is to stimulate the growth of granulation tissue and promote wound healing. In addition, if there is a surface abrasion, if directly covered with gauze, it will cause the gauze to stick to the wound, and the next change of medication will be very painful, you can cover the wound with Vaseline gauze, so that the next change of medication to remove the gauze, the patient will feel significantly less pain.