Frequent nosebleeds in children should be of great concern to parents, and it is best to send the child to the hospital in time for relevant examination and treatment. The first reason is due to local nasal problems and the second reason is due to systemic diseases. Local problems of the nasal cavity are mainly manifested as nasal vascular malformation and abnormal nasal development structure. Many of these conditions are congenital, while some are caused by acquired nose-digging or other diseases, which can be recovered by timely related examination, treatment and correction through the Department of Five Gases. If a child’s nosebleeds are caused by systemic diseases, such as coagulation dysfunction, thrombocytopenia, hemophilia, and even some leukemia in the early stage, the child often has nosebleeds, which can be diagnosed and treated through relevant examinations.