Blowing air conditioning thigh pain may be the cause of muscle injury, synovitis, bursitis, myofasciitis. 1. Muscle injury: long-term excessive exercise can lead to local muscle injury, blowing air conditioning leads to local muscles to receive cold stimulation, will cause slow blood circulation, which may induce pain. 2. synovitis: synovitis is a sterile inflammation of the joints, low-temperature environments, joints are more prone to sudden increases in stress, can appear as soon as the air-conditioning on the thighs of the phenomenon of pain. 3. Bursitis: Bursitis is usually caused by long-term friction and pressure on the joints, leading to bursal edema, which can be triggered by cold stimulation, so there can be a thigh pain when blowing air conditioning. 4. Myofasciitis: cold leads to aseptic inflammation of the myofascia and thigh pain. If the phenomenon of thigh pain when blowing air conditioning, you need to go to the regular hospital in a timely manner to clarify the cause, the doctor according to the situation of the individualized treatment plan, so as not to delay the condition.