Children blowing air conditioning, nosebleed considerations related to the dry environment, may also be trauma, dry rhinitis and other factors triggered. 1. Dry environment, blowing air conditioning in the process of the room is dry, may lead to capillary rupture, so it is easier to appear nosebleed symptoms. 2. trauma, some children often like to dig the nostrils, may cause stimulation of the nasal mucosa, resulting in bleeding symptoms, and blowing air conditioning is not directly related. 3. dry rhinitis, some children have dry rhinitis nasal cavity is dry, secretions stimulate nasal tissue, may lead to nosebleed symptoms, blowing the air conditioning may lead to dryness aggravated, and therefore will also appear nosebleed symptoms. Children blowing air conditioning, nosebleeds may also have other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.