Children always nosebleed need to identify the cause, may be physiological, may be pathological; physiological reasons need to adjust the lifestyle, pathologically caused by the need for targeted treatment under the guidance of a doctor, such as drug therapy. 1. Physiological: hot weather or living environment is too dry, etc., can lead to nasal mucosa dry, can increase the risk of nasal blood vessel rupture, bleeding. At this time, we should pay attention to the environment temperature, generally keep at 24~26℃, humidity at 40~60%, and in winter, we can use humidifier to reduce the dryness and prevent the nasal mucosa from bleeding. 2. Pathological: such as rhinitis and other diseases may also lead to damage to the nasal mucosa, thus inducing nosebleeds, it is recommended to follow the doctor’s instructions with warm saline rinse nasal cavity, if necessary, according to the type of rhinitis application of the appropriate drugs. Nosebleeds can also be caused by other factors, but this symptom alone is not enough to diagnose the disease. Therefore, it is recommended that parents bring their children to the doctor in a timely manner, so that the doctor can identify the cause of the disease and give targeted treatment. The above mentioned medications should be used under the supervision of a doctor.