Joint disorder is actually a kind of joint injury, which is self-limiting and sometimes takes up to 15-30 days to heal itself without special treatment, but it does not necessarily heal itself when the symptoms disappear. The common sites are temporomandibular joint, small joints of thoracolumbar spine, etc. Temporomandibular joint disorder is a relatively common disease in dentistry. The main manifestation is the joint popping in the front area of the external auditory canal when opening the mouth widely, and there may be a clicking sound, and in serious cases, the joint may be dislocated, etc. Therefore, temporomandibular joint disorder syndrome has been a concern for many people. The joint disorder is self-regulating and the symptoms may disappear on their own, but this may take about 15-30 days. Patients usually feel that the symptoms disappear, but in reality it is not necessarily self-healing, but only transforms into a chronic state or temporarily reaches a certain equilibrium. It is very difficult to cure TMJ disorder completely and requires many detailed examinations, and patients can consult the TMJ department of a dental hospital to give the right treatment plan. Patients with TMJ disorder syndrome should pay attention to avoid chewing hard things, pay attention to maintaining oral hygiene, pay attention to keeping warm to avoid cold wind stimulation to aggravate TMJ disorder, maintain a regular life and rest, and avoid staying up late.