Nosebleeds in babies, especially when they occur in large amounts, are often an emergency in the pediatric or ENT departments of hospitals. There are many diseases that can easily cause nosebleeds, which can be caused by nasal diseases (nasal injury, nasal inflammation, nasal septum deviation, nasal foreign body, etc.) or by peripheral nasal or systemic diseases (mainly bleeding diseases and blood diseases). The causes of nosebleeds in babies are: a. Seasonal reasons The dry climate in summer increases the chances of nosebleeds in children, so families can prepare some nourishing topical drugs or nasal spray sea salt water to moisten and protect the nasal mucosa. Second, dietary reasons Because of paranoia, only love to eat meat, not vegetables, nutritional intake is not comprehensive, so as to increase the brittleness of blood vessels, which should correct the paranoid habits of children, drink more water, eat more vegetables, reasonable scientific arrangement of children’s diet. Third, because of nasal itching and rubbing the nose vigorously, resulting in rupture of small blood vessels in the nose, is one of the important causes of nasal bleeding, like rhinitis, sinusitis, etc. will indirectly cause the rupture of capillaries, the formation of regular nasal bleeding, which requires good treatment of rhinitis, sinusitis. Fourth, we must pay attention to the exclusion of various blood diseases and other diseases that cause nasal bleeding, the most basic examination is the routine blood test, to detect abnormalities early to prevent the existence of potential hazards.