Nosebleeds in children may be caused by dry rhinitis, nasal trauma, nasal tumors, etc. It is recommended to consult a doctor in time to find out the cause of the disease and treat it under the doctor’s guidance. 1. Dry rhinitis: most of them are caused by dry air, resulting in dry nasal mucosa, increased vascular fragility, which is easy to trigger bleeding during sleep, sneezing, defecation, you can use warm saline for nasal rinsing and moistening, and you should pay attention to appropriate humidification in the usual living environment. 2. Nasal trauma: the nose is a more fragile part of the face, the child is more active, the injury may trigger nosebleed, when the situation is serious, the amount of bleeding is larger. If the swelling of the external nose is obvious, you can use ice packs to apply cold compresses, do not repeatedly touch and press the nose. 3. Nasal tumor: nasopharyngeal fibroangioma or nasal hemangioma may cause symptoms of nosebleed, bleeding, repeated delay, and ultimately need surgical excision treatment. Nosebleeds in children may also have other causes (such as coagulation disorders, etc.), it is recommended to go to the hospital in time to identify the cause of the symptomatic treatment.