If a traumatic injury results in a skin abrasion of the knee, it should be systematically sterilized and a sterile dressing applied, as local isolation can reduce the chance of infection. Localized soft tissue abrasions can lead to worsening of pain if they come into direct contact with clothing or the outside world. Localized if there is obvious oozing, blood will also contaminate clothing, need to cooperate with anti-infection treatment, serious localized knee injury, need to be further combined with X-ray examination. Because some patients, especially violent action, also easily lead to knee fracture, if necessary, also need to carry out effective immobilization bandage, or surgical tension band fixation. After the injury also need to pay attention to regular wound local change, appropriate oral anti-infection drugs, can apply broad-spectrum erythromycin dispersible tablets for treatment.