If the hand, foot external wound is almost healed can be used with hydrogen peroxide, but the eyes or visceral wounds, etc. can not use hydrogen peroxide. Hands, feet outside the wound is almost well can use hydrogen peroxide, because hydrogen peroxide is a commonly used disinfectant, can kill common bacteria, including spores, etc., especially for the more serious contamination of the wound, the use of hydrogen peroxide for cleaning is better, can prevent wound infection, conducive to the recovery of the wound. But for the eyes or visceral wounds, it is not recommended to use hydrogen peroxide for cleaning. Because hydrogen peroxide is highly corrosive, it may damage surgical tissues or organs, causing secondary damage. Therefore, if there is a wound, do not use hydrogen peroxide to clean, should go to the hospital as soon as possible to the Department of Surgery or Emergency Department for disposal, the doctor will give reasonable treatment according to the condition. During the wound healing period, avoid getting the wound wet. If any abnormality occurs, it is recommended to go to the hospital for examination and treatment in time.