There are the following clinical reasons for children’s frequent nosebleeds: the first reason is dry weather, which leads to dry nasal mucosa, and after the mucosa is dry, the blood vessels under the mucosa are prone to rupture and bleeding, which often occurs in autumn or winter. The second cause is trauma. Children often like to jump and bounce, resulting in the nose being easily hit by external forces, which can lead to nasal bone fracture or nasal mucosa avulsion and nasal bleeding. The third reason, rhinitis or allergic rhinitis, children because of rhinitis allergic rhinitis, prone to sneezing, itchy nose, runny nose, nasal ventilation and other performance, children will often pick the nose, touch the nose, artificially caused by the nasal septum Lee’s area of the artery rupture, bleeding, this clinical is very common. The fourth cause is certain blood diseases, such as thrombocytopenia and coagulation factor deficiency, which can easily lead to rupture and bleeding of blood vessels in the nasal cavity.