摘要Proper functions of the shoulder joint contribute greatly to the good quality of life of patients, therefore, the treatment is very important. In this paper, we will discuss four different kinds of shoulder joint injury and the treatment methods. ( 1 ) the proximal humeral fracture. Neer proposed a classiifcation of proximal humeral fracture on the basis of Codman’s work. For different types of fracture, conservative treatment and surgical treatment both have their own indications. However, inappropriate conservative treatment is more likely to lead to a decline in limb functions. ( 2 ) the acromioclavicular joint injury. Rockwood classification system has been commonly used. Conservative treatment is suitable for type I or II injuries, but surgical treatment is more suitable for type IV. ( 3 ) huge rotator cuff injury.It can cause severe shoulder dysfunction and demandsindividualized treatment. ( 4 ) Poland syndrome. It is characterized by unilateral breast congenital dysplasia or absence ( rare bilateral ) and ipsilateral syndactyly. A comprehensive evaluation of Poland syndrome is beneficial to guide the treatment and predict the prognosis.