The common causes and treatments of frozen shoulder are as follows: 1. Common causes: Common causes include both shoulder causes and extra-shoulder causes. 1. Shoulder causes, mostly in middle-aged and elderly patients around 50 years old, degenerative changes in the soft tissues of the patient’s shoulder, and the ability to withstand various external forces are significantly weakened, while long-term overwork and poor posture can cause chronic injury to the shoulder joint. If the upper extremity is traumatized, local braking of the shoulder joint will occur, and if the braking is prolonged, secondary atrophy and local adhesions will occur in the periapical tissues. If acute contusions and strains of the shoulder occur, improper treatment can also cause inflammation around the shoulder joint.2. Extra-shoulder causes, including cervical spondylosis, heart disease, lung disease, biliary tract disease, all of the above diseases can cause shoulder involvement pain symptoms, and long-term failure to heal can cause persistent spasm and ischemia of the shoulder muscles and form frozen shoulder; II. Acupuncture and massage to relieve the symptoms of frozen shoulder and restore the range of motion of the shoulder joint. If the pain is severe, local closed injection treatment is also available. If the pain interferes with sleep, non-steroidal anti-inflammatory drugs such as fenbid, lexapro, and clozoxazone can be taken for a short period of time to relieve painful muscle abnormalities that spasm. Rehabilitation therapy can also be used to restore the range of motion of the shoulder joint and reduce the symptoms of shoulder pain through the patient’s own wall climbing training or manual release therapy.