Depending on the degree of the injury, the treatment for knocked knee needs to be appropriate, which usually includes general treatment, medication, external immobilization or surgical treatment. For local soft tissue injury, first of all, we should pay attention to rest and avoid moving the knee joint to prevent pulling the surrounding soft tissues causing pain aggravation. Within 72 hours of the injury, local cold compresses can be applied, and after 72 hours, hot compresses can be applied, and the upper limb can be elevated to promote venous return and reduce the local swelling, and when the pain is obvious, non-steroidal anti-inflammatory drugs such as ibuprofen extended-release capsules can be taken orally. For mild ligament injuries, the affected limb can be immobilized, and for serious ligament avulsion or fracture, surgical treatment is needed to repair the damaged ligaments, and the fracture site can be fixed with plaster or surgical incision and internal fixation. If there is obvious swelling and pain or activity limitation after knocking the knee, it is recommended to consult a doctor in time to clarify the degree of injury and then carry out targeted treatment.