A 7-year-old child’s frequent nosebleeds may be caused by trauma or picking the child’s nose indiscriminately, blood system disorders and other reasons. 1. Trauma or picking the nose: children often bump into the nose or picking the nose may lead to rupture of the blood vessels of the nasal mucosa, resulting in frequent nosebleeds, this time parents need to pay attention to correct the child’s habit of picking the nose. 2. blood system diseases: for children who do not have the habit of picking their noses, although the nose is not injured, but from time to time nosebleeds, the number of times is very frequent, this kind of nosebleed may be due to blood disorders, such as idiopathic thrombocytopenic purpura and so on. When the 7-year-old child often nosebleed, should promptly go to the regular hospital, and under the guidance of the doctor for relevant examination and treatment.