Clean wounds can be treated with povidone-iodine, and contaminated wounds can be rinsed with hydrogen peroxide and then sterilized with povidone-iodine. 1. Clean wounds: Clean wounds can be treated with povidone-iodine alone for cleaning and disinfection. If the wound wound is small and shallow, the wound should be bandaged after disinfection to promote wound healing; if the wound is large and deep, the wound should be sutured after disinfection. 2. Contaminated wounds: For contaminated wounds, wound irrigation and disinfection are needed. First of all, the contaminated wounds need to be repeatedly rinsed with hydrogen peroxide and saline, and then choose iodine povidone to disinfect the wounds after rinsing, and then bandage or suture according to the condition of the wounds. Therefore, the choice of hydrogen peroxide or povidone-iodine is made on a case-by-case basis.