A child’s broken nose may be caused by trauma, dry rhinitis, nasal foreign body and other reasons. 1. Trauma: children often pick their nose with their hands or their nose is bumped, which may lead to broken nose, resulting in nasal bleeding, nasal pain performance. 2. Dry rhinitis: the cause of dry rhinitis is not clear, and it is considered to be related to dry weather, vitamin deficiency, anemia and other reasons. Patients will have symptoms such as nasal dryness, nasal bleeding and nasal itching sensation. In addition, due to the brittle blood vessels in the nasal mucosa of patients with dry rhinitis, when children sneeze or rub their noses, there will be rupture of the nasal mucosa. 3. Nasal foreign body: when a child’s nasal cavity appears to be a foreign body, the foreign body may rub the nasal mucosa, thus causing the nose to break. At this time, the patient will have nasal flow thick nasal mucus, nasal mucus with blood, nasal congestion and other symptoms. 4. Other: small children with broken nose may also be sinusitis, rhinitis, nasal septum deviation, hemophilia and other causes. It is recommended that small children with broken noses need to consult a doctor in a timely manner, the doctor will choose the appropriate measures according to the cause of the treatment.