Temporomandibular joint disorder (TMD) is a common clinical disease in the oral cavity and is one of the four most common diseases of the oral and maxillofacial area (caries, periodontal disease, malocclusion, and TMJ disorder). TMD is characterized by abnormal jaw movements (abnormal opening and opening patterns), opening and closing of the mouth with popping murmurs and pain in the temporomandibular region, and in severe cases, headache, neck pain, shoulder pain and neurosis. The prevalence in the population is high, 28-88% according to domestic and international literature, and about 15-26% may require treatment. Some patients can be cured by conservative treatment, while some patients require surgical intervention to cure. Traditional TMJ surgery requires open surgery, which leads to serious complications such as inevitable facial scarring and facial nerve damage leading to facial palsy, plus the “self-healing nature of some joint diseases”, limiting the development of TMJ surgery. TMJ surgery is a new minimally invasive technique developed in the past 20 years, which avoids the shortcomings of open surgery and has the absolute advantages of less damage, high safety factor, no scar on the face and good treatment effect. At present, this work has been carried out in several foreign and domestic large dental hospitals. TMJ arthroscopic treatment is performed by cutting two chopstick cross-sectional holes (5-10 mm) in the skin and inserting cameras and surgical instruments into the upper cavity of the TMJ, which is monitored by a monitor and operated by a doctor to diagnose and treat various joint disorders. Through arthroscopy, surgical operations such as joint cavity irrigation, release of adhesions in the anterior saphenous fossa, repositioning of the joint disc, tightening of the joint capsule and removal of synovial chondromas in the joint can be performed under direct vision. Compared with traditional open surgery, arthroscopic minimally invasive surgery has small incision, less damage to surrounding tissues, short operation time (about one hour), less bleeding, hidden scar, less complications, and can be performed under general anesthesia without pain, which is more easily accepted by patients and has replaced traditional open joint surgery to a certain extent.