Children’s fever nosebleeds may be caused by dehydration, upper respiratory tract infections, blood diseases and other reasons. 1. dehydration: if the children have a fever, there is a lack of water in the body, the nasal mucous membrane dryness caused by the nasal mucous membrane rupture caused by nosebleeds. 2. Upper respiratory tract infection: due to bacterial or viral invasion, triggered by upper respiratory tract infection leading to fever, fever leads to nasal mucous membrane congestion and swelling, or even localized nasal mucous membrane erosion leading to nosebleeds, resulting in children’s fever and nosebleeds. 3. Blood diseases: such as idiopathic thrombocytopenic purpura, leukemia, etc., can cause children fever, nosebleed symptoms. Children with fever and nosebleeds, parents should take children to the regular hospital in time, clear cause, under the guidance of professional doctors to take targeted treatment.