The severity of a knee injury is related to the extent of the injury. If it is a simple soft tissue injury, it is a mild injury, if it is accompanied by fracture, ligament rupture, meniscus injury, etc., it is a more serious injury. If the knee trauma is only a simple peripheral soft tissue injury, not accompanied by fractures and ligament injuries, then it is a mild injury, generally through rest, proper knee braking and oral anti-inflammatory and analgesic medications, such as nimesulide, diclofenac sodium and other treatments for a period of time after the recovery. If the injury is caused by a large external force, the knee patella, tibial plateau and other periarticular fractures, or the medial and lateral ligaments, anterior and posterior cruciate ligament rupture, and meniscus injury is a more serious injury. Most of them need to be treated by surgery, and can only be recovered with functional exercises after surgery. If a knee injury occurs inadvertently, it is recommended that the patient go to the hospital, complete the examination and receive regular treatment. The above drugs should be used under the guidance of a doctor, avoid self-medication.