Children blowing air-conditioning nosebleeds may be physiological phenomena, such as the environment is dry, you can maintain indoor air humidity to relieve, may also be disease factors such as acute sinusitis, nasal septum deviation, acute sinusitis can be treated with nasal irrigation, nasal septum deviation can be treated with surgical procedures such as nasal septum mucoperiosteum corrective surgery. 1. Physiological phenomenon: blowing air-conditioning indoor environment is relatively dry, the children’s nasal cavity will be relatively dry, coupled with the children if they have bad habits, like to use their hands to pick their nostrils, it is easy to induce nosebleeds, without special treatment to ensure that the humidity of the air, and develop good habits can be improved. 2. Acute sinusitis: acute sinusitis caused by children blowing air conditioning nosebleeds, you can use nasal irrigation, with a special nasal rinser, rinsing solution can choose saline, hypertonic saline, etc., to help clear the nasal cavity secretions, improve the micro-environment of the mucosa of the nasal cavity, so as to achieve the purpose of alleviating the nosebleeds, but from the treatment of the disease need to be timely medical treatment with medication. 3. Nasal septum deviation: Nasal septum deviation can cause nasal congestion, nosebleed, headache and other symptoms, there are clinical symptoms of nasal septum deviation need to be evaluated by the doctor after surgical correction, the common surgical methods are nasal septum submucosal correction and nasal septum submucosal resection. If a child suffers from nosebleeds when blowing on the air conditioner and other discomforts, it is recommended to consult a doctor in time to identify the cause of the problem and treat it under the guidance of a professional doctor.