Nosebleeds in air-conditioned rooms may be caused by dry air and cold wind stimulation, and can be relieved by adjusting indoor humidity, avoiding direct air-conditioning blowing, and pressing to stop bleeding. 1. Adjust the indoor humidity: It is recommended to open the windows more often to increase the indoor air flow and humidity, or use an air humidifier to increase the indoor humidity, to avoid the air is too dry, and to avoid rubbing or picking the nose, which is easy to aggravate the situation of nosebleeds. 2. Avoid air-conditioning blowing directly: usually in the air-conditioned room, try to install the air-conditioning baffle or air-conditioning to adjust the direction of the wind, blowing upwards, but also try to stay away from the air-conditioning position a little farther, to avoid air-conditioning blowing directly into the nasal cavity, to reduce the stimulation of the nasal cavity. 3. Pressure to stop bleeding: if the nosebleed should be timely finger pressure on the nose pressure bleeding parts, if the bleeding does not stop, should go to the hospital in a timely manner, the doctor can fill the nasal cavity through petroleum jelly gauze, and then pressure on the bleeding point to stop bleeding. Or perfect nasal endoscopy to find the bleeding point, electrocoagulation to stop bleeding. Meanwhile, for repeated nosebleeds, it is also necessary to improve the blood routine and coagulation function tests to exclude the possibility of blood system diseases. If the symptoms of nosebleeds continue to be unrelieved, it is recommended to go to the hospital, under the guidance of the doctor to avoid delaying the condition and causing other damage.