Medial knee pain can be caused by osteoarthritis and synovitis. If the pain is caused by osteoarthritis, it can be treated with oral painkillers and chondro-nutritional drugs, while if it is caused by synovitis, it can be treated with oral non-steroidal anti-inflammatory drugs. 1. Knee osteoarthritis: most knee osteoarthritis is mainly dominated by medial lesions, so when the medial cartilage is worn and degenerated, it can cause pain in the medial knee eye, so it can be treated with oral painkillers such as Loxoprofen Sodium, Celecoxib, etc. In addition, it can be supplemented with nutritional chondroitics. In addition, it can be supplemented with nutritional cartilage drugs such as glucosamine capsules. Most of the pain symptoms can be significantly relieved. 2. Knee synovitis: Injury or lesion on the inner side of the knee joint can stimulate the proliferation of the inner synovium and produce aseptic inflammation, resulting in synovitis and causing pain on the inner side of the knee joint, which can also be accompanied by swelling of the knee joint. Therefore, it can be treated with oral medications such as non-steroidal anti-inflammatory and analgesic drugs such as acetaminophen and diclofenac sodium. Since a variety of factors can cause medial knee pain, early hospitalization is recommended for oral medication or comprehensive treatment under the direction of a physician.