It is possible to sterilize a wound with alcohol if it is pus-filled after a trauma. If the wound is not sterilized and cared for after trauma, it may cause infection, redness, swelling, pus, etc. In severe cases, a systemic reaction, such as fever, may occur. For infected and suppurating wounds, it is possible to disinfect them with alcohol, iodophor and other disinfectants. After the wound is purulent and infected, it is necessary to carry out regular dressing changes, and use alcohol, iodophor and other disinfectants to disinfect the wound and the surrounding skin; if there is more pus and the fluctuating sensation is obvious, it is possible to carry out incision and drainage, drain the pus and carry out adequate irrigation, and strive to have no pus residue, and the irrigation can be used with saline, hydrogen peroxide, and so on. If the systemic reaction is more serious, you can also choose the appropriate antibiotics according to the results of bacterial culture.