Periarthritis is a degenerative change in the soft tissues surrounding the shoulder joint, such as the joint capsule and rotator cuff ligaments, producing exudation or cellular infiltration followed by fibrosis and adhesions. It is usually seen in people over 50 years old. In Chinese medicine, it is called “Leaky Shoulder Wind”, “Fifty Shoulders”, “Shoulder Condensation” and “Frozen Shoulder”. The high incidence of frozen shoulder is mainly related to its anatomical and physiological characteristics: 1. Poor stability of the shoulder joint (shallow joint pelvis, loose joint capsule, etc.). 2. The shoulder joint has a large range of motion, and the soft tissues are subject to various strains, abrasions, and extrusions, so there are more opportunities for injury. 3.It is easy to be attacked by wind, cold and humidity. Frozen shoulder causes aseptic inflammation, causing inflammation and edema of the surrounding bursa, resulting in a decrease in blood supply to the shoulder. The pain produced further restricts the movement of the shoulder. This increases the chances of adhesions being caused after the disease. The clinical manifestations are pressure pain, and the pain is widespread, commonly in the rostral eminence, subacromial, posterior shoulder, medial scapula, interscapular sulcus and shoulder joint elevation, and difficulty in backhand movements. The pain is aggravated by exertion and climate change, and is lighter during the day and heavier at night. In clinical practice, we find that patients with frozen shoulder are often combined with cervical spine disorders (such as cervical vertebral osteophytes and cervical disc atrophy and degeneration). This is because patients with frozen shoulder are in the age group of 45-55 years old when cervical spine disorders are more prevalent. Cervical vertebral osteophytes, cervical disc atrophy and degeneration, cervical ligament calcification and other changes affect the narrowing of the intervertebral foramen, causing nerve root compression and numbness of the shoulder and upper extremity. We call it neck and shoulder syndrome. For those who have frozen shoulder and cervical spondylosis, the effect of treating frozen shoulder alone is often not good, so comprehensive treatment can be effective only after a clear diagnosis.