Shoulder pain in cold weather may be caused by rheumatoid bone disease, frozen shoulder, local joint inflammation and other reasons. 1. Rheumatic bone disease: Shoulder pain occurs in cold weather, the first thing to consider is the symptoms caused by rheumatic bone disease. Due to the patient’s own immune deficiency, the body’s resistance will be lowered in cold weather, leading to the aggravation of rheumatic pain symptoms after the shoulder joint is involved. 2. Frozen shoulder: Shoulder pain after cold weather may also be a symptom caused by frozen shoulder, especially when the weather is cold, the cold affects the local blood supply to reduce, resulting in pain symptoms or aggravation. 3. Local joint inflammation: As the shoulder is stimulated by the cold wind in the external environment, it accelerates the local vasoconstriction of the joints, resulting in insufficient blood supply to the local muscles of the shoulder. This causes hypoxia and pain symptoms, leading to the phenomenon of shoulder pain when it is cold. There are many reasons that cause shoulder pain when it is cold, as well as cervical spondylosis and soft tissue injury of the shoulder, etc. It is recommended to consult a doctor in a timely manner and carry out relevant treatments under the guidance of the doctor.