The headache caused by blowing air conditioner is mainly caused by the following aspects: 1. The air conditioning temperature is too low and the temperature difference between indoor and outdoor is large, which can easily cause cold and flu, thus leading to headache. 2. The air conditioning room is a relatively closed environment and the air is not circulating, so staying in the air conditioning room for a long time can easily cause ischemia and hypoxia in the brain, thus leading to dizziness and headache. 3. The cold wind stimulation for a long time can easily cause vasoconstriction and spasm in the brain, thus causing headache. and thus cause headache. Clearly the cause of headaches can be improved by the following aspects: First, the air conditioning temperature should not be adjusted too low, you can avoid catching a cold. Secondly, the windows should be opened frequently for ventilation, which is conducive to circulatory breathing. Finally, in ordinary life, whether it is air conditioning or fans, pay attention not to blow against a part of the body, which is not conducive to human health.