Joint pain caused by fan blowing may be caused by some physiological factors, or it may be caused by certain diseases, such as arthritis, synovitis, muscle injuries and so on. Different causes of disease, different treatment methods, commonly used treatment methods are general treatment, physical therapy and so on. 1. Physiological factors: blowing an electric fan will cause the contraction of blood vessels in the tissues, resulting in insufficient blood supply, thus causing pain. Attention should be paid to keep the joints warm and reduce strenuous exercise. 2. Pathological factors: usually on the basis of their own diseases, blowing the fan after the cold induced joint pain. (1) Arthritis: The temperature of the environment around the joints decreases, the blood circulation in the joints slows down, and the inflammatory factors in the joints can not be transported away in time, stimulating the peripheral nerves to produce pain. You should strengthen the warmth of the joints, avoid direct wind blowing on the joints, and wear the necessary warm items. (2) Muscle injury: the degree of muscle contraction will be deepened after being exposed to cold, leading to the accumulation of inflammatory factors, causing increased excitability of peripheral nerves and pain. It is important to pay attention to rest after exercise and muscle protection after injury. Blowing fan joint pain may also be caused by synovitis, venous injury and other factors. After excluding physiological factors, it is recommended that patients with joint pain go to the hospital in a timely manner and follow the doctor’s instructions for standardized treatment.