Frozen shoulder generally does not cause swelling of the arm, but if the patient’s frozen shoulder has a long course of disease, causing local vasospasm will occur in the upper limbs of the blood circulation obstacles, which can also lead to swelling of the arm and other manifestations. Frozen shoulder mainly causes pain around the shoulder joint and limitation of shoulder joint activities in all directions, generally occurring in the age of about 50 years, the pain is obvious at night. Early after regular and timely treatment can generally be cured, if the condition is not timely treatment, the disease course is longer, will cause local muscle atrophy, and cause the upper limb vasospasm, vasospasm will cause the upper limb reflux obstacles, thus causing arm swelling and other manifestations. In addition, it should be pointed out that arm swelling is also usually considered other causes such as trauma, infection, thoracic outlet syndrome, tumors and other lesions, which need to be combined with medical history and physical examination to identify.