The main disinfectants for skin wounds are type II povidone-iodine, type III povidone-iodine, tincture of iodine and alcohol, which can be used according to the type of wound. For the face, oral mucosa, perineal area of the skin, the tolerance is lower, then you can use the three types of iodophor, its alcohol concentration is low, less irritation for the wound. For the extremities and scalp, where mucosal irritation is better tolerated, type II povidone-iodine can be used for disinfection. For heavily infected wounds, tincture of iodine and alcohol can be used to disinfect the wound, and the tincture of iodine can be disinfected and then alcohol can be used to deiodinize the agent. The purpose of disinfection is to prevent infection, if infection, not only difficult to heal, but also cause more damage; so it is recommended that the patient, under the guidance of the doctor, choose the appropriate disinfectant to disinfect the skin wound.