Arthroscopic shoulder surgery is to cut several holes in the skin even smaller than the thickness of chopsticks, put special camera lenses and surgical instruments into the joints, and operate by experienced doctors under the supervision of connected monitors to diagnose and treat various joint diseases. Compared with open surgery, shoulder arthroscopy has the characteristics of small incision, low infection rate, small skin scar, low postoperative disability rate and rapid recovery. The rapid development of shoulder arthroscopy in China is still in the past 3-5 years, but so far, there are very few mainland doctors who can freely carry out shoulder arthroscopy surgery, and there are only a handful of skilled foreign shoulder arthroscopists. This is because shoulder arthroscopy is completely different from knee arthroscopy. Shoulder arthroscopy requires the precise coordination of eyes, brain and hands, which is difficult for most people to complete, or even never. So at present, although many units have shoulder arthroscopy equipment, it is difficult to perform minimally invasive surgery under full arthroscopy, but combined with arthroscopic incision. These techniques are not really minimally invasive, or "mini-open" surgery. Of course, although the rehabilitation is a bit difficult, the effect of mini-open surgery will be very good, so it is suggested that limited incision of shoulder joint surgery can be carried out before the shoulder arthroscopy technology is fully mastered to avoid unnecessary complications. With the acceleration of modern people's work efficiency and life rhythm, shoulder pain has become one of the diseases that plague middle-aged and elderly people. People often mistake the pain around the shoulder joint for scapulohumeral periarthritis. In fact, if the patient has pain around the shoulder joint and limited shoulder movement, many diseases should be considered, such as scapulohumeral periarthritis, habitual dislocation of the shoulder joint, acromioclavicular joint, cervical spondylosis, tumor, infection and so on. All these need to be differentiated and diagnosed through medical history, symptoms, signs and auxiliary examination. When traditional treatment methods are ineffective, he can use shoulder arthroscopy for examination and treatment. Arthroscopic surgery of shoulder joint is mainly suitable for the diagnosis and treatment of synovial planing osteophyte removal, free body removal, shoulder dislocation or subluxation, glenoid lip tear, rotator cuff tear, frozen shoulder, coracoacromial ligament and acromioplasty, scapulohumeral periarthritis, rotator cuff injury, calcified tendinitis, biceps brachii tendon injury, synovitis, suppurative arthritis, osteoarthritis and other diseases. The orthopedic joint ward of our hospital is the qualification of arthroscopy training base of the Ministry of Health. He has three sets of arthroscopic hosts and supporting equipment, fully mastered the technology of shoulder arthroscopy, and served as a teacher in many training courses for shoulder arthroscopy at home and abroad.