Children with constant nosebleeds can be caused by bad habits, dry nasal passages and rhinitis. 1. Bad habits: it may be the child’s habitual digging of the nostrils with the hand, resulting in capillary rupture, causing infection of the nasal mucosa and the phenomenon of nosebleeds. 2. Nasal dryness: generally related to the air environment, children do not like to eat vegetables, fruits and other factors, easily induced nasal dryness, resulting in children’s noses bleed all the time. It is recommended to increase the indoor humidity and consume more fresh fruits and vegetables, so as to improve the condition of nosebleed. 3. Rhinitis: Due to the local inflammatory stimulation of the nasal cavity, the symptoms of nosebleed appear after the nasal cavity erosion. Children always have nosebleeds, there may be other reasons, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, give targeted treatment or treatment.