Children’s nasal mucosal erosion repeated bleeding may be due to dry rhinitis, nasal septum deviation, acute rhinitis and other factors, need to analyze the specific causes. 1. Dry rhinitis: it is a chronic inflammation of the nasal mucosa, which can cause nasal mucous membrane erosion leading to recurrent nosebleeds, and ulcers of different sizes can also appear, especially in the anterior part of the nasal cavity, which is the most obvious. 2. Deviated nasal septum: due to the abnormal anatomical position of the nasal septum, resulting in nasal dysfunction, nasal congestion, nosebleed and other symptoms, causing nasal mucosal erosion, and because of the influence of airflow, the bleeding of the raised surface of the erosion will be more serious. 3. Acute rhinitis: acute inflammation of the nasal mucosa caused by viral infection of the upper respiratory tract can cause nasal mucosal erosion leading to repeated bleeding. 4. Bad nose picking habits: if the child frequently picking and digging the nostrils, may lead to nasal mucous membrane damage, nasal mucous membrane erosion repeated bleeding. Children with symptoms of nasal mucosal erosion repeated bleeding may also have other reasons, should be timely to the hospital, improve the relevant examination to clarify the cause of the disease, under the guidance of the doctor for targeted treatment.