Epistaxis, also known as rhinorrhea, is an acute symptom commonly seen in the outpatient clinics of the Department of Five Gases, and can be cured by itself if the bleeding is mild, or can cause hemorrhagic shock or even be life-threatening if the bleeding is severe. The danger to people is great, so when epistaxis is found, we should go to the hospital for further examination in time to facilitate the later treatment. Preventive measures: 1, do not often dig the nostrils, because there are many nasal hairs in the nostrils, nasal hairs have the role of cleaning and filtering the air, can prevent dust from entering our lungs, if often digging nostrils, destroy the nasal hairs, dust directly into our lungs, there will be lung disorders. 2, the nostrils appear dry, or the appearance of nasal scabs, you can use cotton swabs in the nasal cavity to apply some eye ointment with anti-inflammatory effect. This can keep the nasal cavity dry, with moisturizing effect, to prevent nasal bleeding, but also to fight some bacteria in the nasal cavity, with anti-inflammatory effect. 3, usually eat more fruits and vegetables rich in vitamin C, such as kiwi, grapes, strawberries, cucumbers, etc., because vitamin C can maintain the integrity of blood vessels, reduce nasal bleeding and exudation phenomenon, the repair of the wound is also very good. 4, drink more water, especially in autumn, dry weather, moisture is easy to evaporate, often dry nasal cavity, mouth and skin phenomenon, normal people generally need to drink 7 to 8 glasses of water a day to maintain the normal metabolism of the body, to prevent nasal bleeding, the first thing to do is to keep the nasal cavity moist. 5.If nasal bleeding occurs frequently, go to the hospital to do a blood test and liver function test to exclude nasal bleeding caused by blood disease and liver disease, if there is no problem with blood and liver, then nasal bleeding is caused by dryness. If there are liver and blood problems, treat them actively. 6.In an environment with a large ash layer, it is best to wear a mask when you go out to avoid dust from entering our nasal cavity.