Knee trauma with skin breakage, first, the local area can choose saline to clean, then is the iodophor disinfection, if it is a very superficial wound, you can choose mupirocin and so on to prevent infection. Keep the local place dry, temporarily do not touch the water helps the local wound crust, if the local wound is deeper, need to go to the hospital in time to deal with, you can use hydrogen peroxide with saline to clean the wound, if necessary, need to suture, and then given to prevent tetanus. Next, oral anti-inflammatory drugs, such as levofloxacin and other anti-inflammatory treatment, if the pain is obvious, you can use ibuprofen extended-release capsules to relieve pain, while keeping the wound dry, adhere to the change of medication, stitches can be removed two weeks later. In addition to skin abrasions, if the local swelling and pain are obvious, it is also necessary to routinely improve the knee x-ray to determine the possibility of local fracture.