Children’s frequent nosebleeds in three to five days may be caused by bad habits, but also may be caused by climatic reasons or disease factors. 1. Bad habits: some children have bad habits, such as often picking the nostrils with their hands, easy to damage the nasal mucosa, resulting in blood vessel rupture and bleeding, thus appearing the phenomenon of frequent nosebleeds. 2. Climatic reasons: if in the fall and winter seasons, due to the dry climate, while children drink less water, less intake of vegetables and fruits, it is easy to lead to nasal mucosa dry, so it is also easier to bleed. 3. Disease factors: If the child suffers from blood diseases, such as leukemia, thrombocytopenic purpura and aplastic anemia, it is also easy to have nosebleeds. Children three or five days often nosebleeds should be taken seriously, it is recommended to go to the regular hospital in a timely manner to carry out relevant examinations, a clear diagnosis, and actively comply with the doctor’s instructions to deal with, in order to avoid the impact on the child’s physical health.