If a child has allergic rhinitis and has nosebleeds, it is best for parents to take the child to have blood tests for routine blood tests and four coagulation tests to rule out any problems with the child’s blood system. If there is no problem and can be reassured, after that consider checking the nasal endoscope under the direct view of the mirror can clearly see the situation of the child’s nasal mucosa. At this time, it is recommended to spray compound menthol, nasal inhaler, which can effectively reduce the situation of mucosal erosion, and apply erythromycin ointment or gentamycin ointment, which can play an anti-inflammatory role to promote the healing of erosion mucosa to reduce the symptoms of nosebleeds. But in the process of treatment, you need to tell your child not to rub his nose repeatedly with his hands and avoid blowing his nose hard to reduce the bleeding again.