Nosebleeds are a common nasal disease, which can cause nosebleeds in children for many reasons, including physiological factors, such as fragile nasal mucosa, bad habits, unbalanced diet, etc., and pathological factors, such as deviated nasal septum, rhinitis, anemia and other reasons. 1, physiological factors 1, nasal mucosa fragile: when the weather is dry, children’s nasal mucosa is more fragile, prone to nosebleeds; 2, bad habits: some children like to pick their nose with their hands, when picking the nose, nails or other foreign objects will be fragile nasal mucosa injury, so that the nose bleeding situation; 3, unbalanced diet: long-term picky food or diet single This can lead to a lack of vitamins or minerals in children, resulting in malnutrition, which can lead to nosebleeds all the time. Pathological factors 1, nasal septal deviation: If the mucosa of the nasal septal deviation is weak, nasal bleeding can easily occur, which can be surgically corrected to improve the situation of nasal bleeding in children; 2, rhinitis: including acute and chronic rhinitis, due to the front of the nasal septum mucosa erosion, bleeding, resulting in children always nosebleeds, can be accompanied by nasal congestion, runny nose, sneezing and other symptoms; 3, anemia: for example Autoimmune hemolytic anemia, aplastic anemia, all of which can lead to nosebleeds, and at this time, it is necessary to carry out causal treatment and treat the primary disease.