Knee wound scabbing and cracking repeatedly for more than a year to consider and knee joint repeated activities or wound infection has a relationship, can be treated through daily care, medication and other methods. 1. Daily care: avoid the injured leg activity, or reduce the injured leg knee activity range, reduce the possibility of its cracking. 2. Medication: Disinfecting treatment with iodophor, or softening the scab with saline, applying erythromycin ointment externally, and oral anti-inflammatory treatment with antibiotics such as roxithromycin. Vaseline cream can be applied locally to lubricate the wound, and at the same time can prevent wound contamination and protect the wound. It is recommended to use medication under the guidance of a doctor and go to the hospital in time. Don’t scratch the wound with your hands during the recovery period to avoid the wound being infected and affecting its recovery speed.