If there is local skin damage to the knee abrasion, you can choose to disinfect it with iodophor and apply anti-inflammatory drugs, such as Bactrim. If the local swelling is obvious, you can spray drugs with blood-activating effect, such as Yunnan Baiyao aerosol or swelling and pain aerosol, and rest temporarily to avoid repeated local friction, which will help the wound to recover. If the local swelling is obvious and affects normal flexion and extension activities, note the possibility of fracture of the patella and other fractures and seek an orthopaedic surgeon’s consultation in a timely manner. In case of combined fractures, medications to promote fracture healing, such as bone peptide tablets, can be used. Of course, proper local cast immobilization is also needed, and if the fracture is significant, surgical repositioning and fixation is required if necessary.