Children’s nose bleeding may be forceful nose picking, dry rhinitis, influenza, leukemia and other reasons, need to be for the cause of the use of medication, general treatment and other treatments. 1. Exerting oneself to pick one’s nose: children frequently exert oneself to pick one’s nose leading to the rupture of the capillaries of the nasal mucosa and bleeding, need to pinch both sides of the nose to stop bleeding, and at the same time, apply cold compresses to the forehead and the back of the neck, to promote vascular constriction to stop bleeding. 2. Dry rhinitis: atmospheric pollution, dry climate and other factors lead to nasal mucosa dry congestion, secretion reduction and part of the crust, capillary fragility increase and rupture bleeding. Need to apply sea salt water nasal spray, liquid paraffin oil drops and other treatments. 3. Influenza: when viral infection leads to influenza, the acute inflammatory reaction of nasal mucosa leads to increased capillary permeability, local congestion, edema, so it will nosebleed. You can apply saline nasal spray, hydroxymetazoline nasal drops and other medications, but also need to use oseltamivir anti-infection treatment. 4. Leukemia: massive proliferation of malignant tumor cells in bone marrow hematopoietic tissues leads to hematopoietic dysfunction, decreased platelet production, coagulation dysfunction and nosebleed. Chemotherapy can be applied according to different types of chemotherapeutic drugs to be chemotherapy, commonly used drugs include imatinib and so on. Pay attention to the use of drugs under the guidance of the physician. Children’s nosebleeds may be related to a variety of factors, it is recommended to consult a doctor to clarify the diagnosis and follow the doctor’s instructions for treatment.