Habitual shoulder dislocation is a common injury among young patients in the university city. many people have recurrent shoulder dislocation after the first dislocation, and its recurrence is closely related to age. the recurrence rates of the three age groups under 20, 20 to 40, and over 40 are 90%, 60%, and 10%, respectively. The first dislocation in the elderly often causes rotator cuff tears and large humeral tuberosity fractures, and the recurrence rate is lower than that of young people. The diagnosis of SI can be confirmed by history and physical examination in 90% of cases. The main symptoms are shoulder pain, easy fatigue, radiating numbness and tingling in the upper arm. The shoulder “slides in and out” unsteadiness, sometimes just as “shoulder impingement syndrome”. In addition, when the arm is abducted to 90° and then externally rotated, most patients feel pain behind the shoulder and have a premonition of imminent dislocation and refuse to rotate further. Studies have found that in many cases of shoulder dislocation, damage to the “glenoid labrum” at the front of the joint occurs, and the damaged labrum is difficult to repair on its own because it is torn away from the glenoid, especially in young people under 25 years of age, due to the high activity level. Because Bankart was the first to identify this characteristic injury, this pathology was named “Bankart injury”. Bankart injuries should be repaired promptly, especially in young people under 25 years of age after the first dislocation. This is to avoid repeated dislocations that may cause relaxation of the joint capsule and collapse of the humeral head due to repeated impingement. For the treatment of recurrent shoulder dislocations, there are two types of treatment: open Bankart repair and total arthroscopic Bankart repair. Open surgery is relatively simple, but more traumatic, with some degree of postoperative loss of joint mobility. Arthroscopic repair is less traumatic and has a faster postoperative recovery, however, it requires a high degree of difficulty in terms of microscopic technique. Before determining the surgical plan, a detailed examination is required. Firstly, the imaging examines whether there is bony damage of the articular glenoid, articular glenoid morphology and humeral head bone defect (Hill-Sachs injury); EUA confirms whether it is unidirectional and extent? Arthroscopy is then performed to confirm the presence of injury to the anterior glenoid labrum of the shoulder joint and joint capsule laxity. Conservative treatment mainly involves strengthening the deltoid, rotator cuff and scapular band muscle exercises, which are effective for random SI, PSI and MDI. The excellent rate of treating non-traumatic subluxation is 80%, while the excellent rate of treating traumatic subluxation is only 16%. Speck performed arthroscopic capsular supination and glenoid lip Mitek rivet fixation in 38 patients with ASI, and immediately performed functional exercises of shoulder abduction 60° and external rotation 20° after surgery. The average follow-up was 24 months, and the rate of excellent shoulder function was 90 %, 80% of shoulder sports activities were not restricted, and compared with open Barkant surgery, the results were less invasive and better, and the subscapularis tendon could be kept intact. Nowadays, there is a tendency to use absorbable materials instead of metal materials such as screws and “U” shaped nails in arthroscopic repair of glenoid labrum injuries. The latter has complications such as loosening, displacement and fracture, thus the postoperative recurrence rate is high (15%-30%), while the recurrence rate after using absorbable materials is only 10%. the surgical treatment of MDI is less documented, and the surgical satisfaction rate of treating MDI by moving the lower part of the joint capsule up is 86%. Active or passive postoperative rehabilitation of the periprosthetic muscles is an important step in maintaining the surgical outcome. The strengthening of the deltoid, rotator cuff muscles and biceps and triceps muscles is important in maintaining glenohumeral joint stability.