Babies blowing air-conditioning fever at night, generally blowing air-conditioning is not the cause of fever, blowing air-conditioning cold is only the trigger, the baby fever and the body’s immunity is lowered, infections and other factors related. But on the other hand, if the air conditioner has not been cleaned for a long time, there may be germs in it, which can lead to baby legionella pneumonia and can also lead to the appearance of fever. Generally speaking, simply blowing a clean air conditioner will not cause the baby fever, cause fever may be due to the air conditioning so that the surrounding environment temperature changes lower, the baby’s body immunity is lower, the air in the room does not circulate, may cause bacterial or viral infections, which can lead to fever. But on the other hand, legionella bacteria often exist in the air conditioning cooling water and piping system, the contaminated air conditioning can also lead to baby legionella pneumonia, fever manifestations. Therefore, if you want to give your baby air conditioning, you should give your baby good warm measures to avoid the air conditioning wind blowing directly onto the baby, ventilate the room regularly, and clean the air conditioner regularly to minimize the chances of baby’s infection, and if your baby has a fever, you should go to the hospital in time for medical treatment.