Based on the medical history, it is not difficult to diagnose TMJ disorder syndrome with the presence of the main symptoms mentioned above. The following methods are commonly used to assist in the diagnosis: ① X-ray plain film (joint Xue’s position and condylar transpharyngeal lateral position), which can reveal joint space changes and bone changes, such as sclerosis, bone destruction and hyperplasia, cystic changes, etc. Arthrography (upper cavity angiography is mostly used because it is easy to operate, but lower cavity angiography is less used in China) can reveal displacement of the articular disc, perforation, changes in the attachment of the articular disc and changes in the cartilage surface. In recent years, many scholars have used endoscopic examination of the joint to detect early changes in the disease, such as congestion, oozing, adhesions of the joint disc and synovial membrane, and “joint rats” formed by undifferentiated mature cartilage-like tissue. Since there are many types of the disease, the treatment varies. Therefore, a specific type of diagnosis should be made. For example, extrinsic pterygoid muscle spasm, reversible articular disc displacement or articular disc penetration, etc. Treatment measures 1, correction of occlusal relationship by the dental specialist examination and treatment 2, closure therapy can be used 0.25-0.5% procaine 3-5ml for extra pterygoid muscle closure. Puncture point at the midpoint of the sigmoid notch, vertical needle, depth of about 2.5 ~ 3cm, back to draw no blood when injecting drugs. It is often used for patients with overly large open mouth. 3.Chloroethane spray with massage can relieve masticatory muscle spasm. When spraying chloroethane into a mist, intermittent spraying, with massage to prevent frostbite. And pay attention to the protection of the eyes and ears, away from the source of fire. 4.Acupuncture therapy acupuncture points: Shimonoseki, auditory gong, cheek car, hegu, with medical wind, sun. 5, ultra-short wave, ion introduction, electrical excitation and magnetic therapy and other local physical therapy has a certain effect. While treating, it is important to correct bad habits (such as unilateral chewing) and prevent over-open mouth, etc.