The so-called “frozen shoulder” is the most common diagnosis for neck and shoulder pain in the clinical practice of orthopedic surgeons, but it is also the most confusing diagnosis. There are at least six to seven types of disorders that cause shoulder pain and restricted movement, and the treatment for each type of disorder is different. Therefore, the diagnosis of “frozen shoulder” has been abandoned and a more definite diagnosis should be made based on the specific condition. A significant number of patients who are diagnosed with frozen shoulder are currently suffering from frozen shoulder. Frozen shoulder is an idiopathic disorder of the shoulder joint, the cause of which is not well understood, and is more common in patients with diabetes than in the general population. It is defined as an idiopathic shoulder disorder with progressively worse shoulder pain and limited motion, excluding all known factors. The age range of its onset can be as wide as 30 to 70 years, but it is mostly seen in the 50s. The main symptoms are pain and limitation of motion. The pain is most pronounced at night and the limitation of motion is all-around limitation, but the limitation of external rotation is the most common. The pain and limitation of movement usually reach their peak 3-6 months after the onset of the disease, and the symptoms gradually begin to relieve after 2-3 months of maintenance at this stage. Freezing shoulder is a self-limiting disease, and most patients resolve it on their own after a period of time, usually for 1 to 1.5 years. If the shoulder joint adhesions and pain reach an extreme value and remain unrelieved for 6 months, then the diagnosis is persistent frozen shoulder. This is relatively rare in clinical practice. The diagnosis of frozen shoulder is therefore a diagnosis of exclusion, meaning that all known factors that can cause shoulder adhesions need to be excluded, including acromioclavicular impingement and rotator cuff injury, calcific rotator cuff tendonitis, osteoarthritis of the shoulder joint, shoulder trauma, and a history of secondary shoulder surgery. Most treatments for frozen shoulder are conservative symptomatic treatment with rehabilitation for distraction mobility, but violent manual pushing and loosening should be avoided. The effectiveness of closure is not certain and is generally not recommended as a routine treatment. For recalcitrant frozen shoulder, or if the patient requires the shortest possible course, push and release under anesthesia may be used after the symptoms have reached their extreme value, and strict postoperative functional rehabilitation exercises are emphasized to prevent re-adhesion after surgery. With the development of arthroscopy in recent years, arthroscopic total joint capsule release of the shoulder can achieve satisfactory results. There are several patients with frozen shoulder treated by arthroscopic surgery in our hospital every month, and the treatment results are satisfactory after follow-up.