Jaw dislocation clinically known as temporomandibular joint dislocation, one side of the dislocation for the unilateral dislocation of the temporomandibular joint, often manifested in the dislocated side of the mouth and front teeth closed with difficulty, drooling, speech spitting unclear, chewing and swallowing food with difficulty, and localized pain and so on. Temporomandibular joint dislocation often occurs when the mouth is wide open, and the joint cannot return to its normal position when the mouth is shut after dislocation, which affects the function of the oral cavity, and is mainly manifested by the inability to close the mouth normally on the side of the dislocation, unclear spitting when speaking, drooling, and difficulty in chewing and swallowing food. As a result of dislocation of the jaw, the face becomes longer, the ear screen on the dislocated side is concave in front, and there is pain at the temporomandibular joint. If you have the above symptoms, it is recommended that you seek medical attention for relevant examinations, such as X-rays, in order to make a clear diagnosis and follow the doctor’s instructions for treatment.