Knee pain is a symptom that covers many diseases. Simply knee pain is an injury to the soft tissues around the knee joint. The soft tissues around the knee are the subcutaneous tissue, ligaments, muscles, and the bones, meniscus, and articular cartilage in the joint. In general, pain around the knee joint, common pain is a soft tissue injury. The first treatment for soft tissue injury is to rest the knee joint, pay attention to the warmth of the knee joint, and you can use topical anti-inflammatory and pain-relieving drugs. If the pain in the knee is severe, a knee radiograph is needed to see if there is any bone growth, degeneration or osteoarthrosis in the knee joint. If osteoarthrosis occurs, you also need to treat it according to the treatment for osteoarthrosis. If there is no problem with the bones and the pain is severe, an MRI will be done to see if there is any damage to the ligaments around the knee joint, the meniscus inside the joint, or the ligaments and cartilage inside the joint, and if damage is found, appropriate treatment will be needed to relieve the pain.