The reasons for blowing air-conditioning arm soreness include cold, frozen shoulder, biceps tenosynovitis, etc. The treatment includes physical therapy, medication and so on. 1. Cold: blowing air conditioning for a long time will cause poor local circulation in the arm, and cause symptoms of soreness. You can use massage, acupressure, acupuncture and other methods to dredge the meridians and promote local blood circulation and improve the symptoms. 2. Frozen shoulder: If the patient has this disease, the arm is also easy to be sore after blowing air conditioning. It can be treated by functional exercise, pain point closure, drugs (such as ibuprofen, indomethacin), physical therapy and other methods. 3. Biceps tenosynovitis: If the patient has this underlying disease, the condition is easy to recur after exposure to cold. Symptoms can be alleviated by appropriate activities, and can also be treated by local massage, hot compresses and other physiotherapy, and if necessary, pain relief by injection of glucocorticosteroids such as prednisone. In addition, patients with underlying diseases such as adhesive capsulitis and shoulder impingement syndrome may also experience the above symptoms after exposure to cold. If the above symptoms never improve, it is recommended to go to the hospital to clarify the cause and give targeted treatment. The above medication should be used under the guidance of a pharmacist or doctor, avoiding blind self-medication.