Blowing the air conditioning leg pain first may be caused by the air conditioning temperature is too low, need to keep warm in time. Secondly, it may also be caused by rheumatoid arthritis, rheumatoid arthritis, etc., which needs to be treated with medication and surgery. 1. Air conditioning temperature is too low: if the air conditioning temperature is too low, and blowing the air conditioning to the legs close to the air conditioning, may affect the blood circulation of the legs, the human body will appear leg pain performance, generally transferred to the temperature of the environment will improve the symptoms. 2. Rheumatoid arthritis: blowing air conditioning leg pain may be caused by rheumatoid arthritis, the patient needs to be under the guidance of a doctor with diclofenac sodium, non-steroidal anti-inflammatory drugs such as lorazepam, methotrexate and other anti-rheumatic drugs. If the effect of medication is not good and joint dysfunction or deformity occurs, surgery is needed to correct the deformity or restore joint function. 3. Rheumatoid arthritis: patients with rheumatoid arthritis will also have the symptom of air-conditioning leg pain, patients need to follow the doctor’s instructions with benzylpenicillin, roxithromycin and other antibiotics. For patients with severe leg pain, need to follow the doctor’s instructions with celecoxib, ibuprofen and other non-steroidal anti-inflammatory drugs. Patients blowing air conditioning leg pain may also be knee osteoarthritis, knee synovitis and other diseases. It is recommended that patients blowing air conditioning leg pain need to consult a doctor in a timely manner, in accordance with the doctor’s instructions, do not blindly use drugs.