Temporomandibular arthritis is an acute inflammation of the synovial membrane and joint capsule caused by excessive opening or trauma from various causes, or chronic inflammation of the synovial membrane and joint capsule can be caused by jaw factors. The acute inflammatory period can be cured if treated promptly and the disease factors are removed, while chronic inflammation is often recurrent and prolonged. In case of clear diagnosis, oral non-steroidal anti-inflammatory and analgesic drugs can be used first, which can be supplemented with physical therapy. If this treatment has no obvious effect, joint closure treatment can be used. In recent years, the application of joint lavage has also had good results. Repeated lavage with saline under the arthroscope can wash out inflammation, immune complexes, and small free bodies, and can also loosen small adhesions, and then inject prednisolone suspension after lavage, which is beneficial to anti-inflammation and pain relief, increase joint movement, and enlarge the opening.