One year old baby nosebleed should first stop bleeding, after achieving the purpose of stopping bleeding, need to clarify the cause of nosebleed (such as nasal foreign body, etc.) and treatment, such as removing the foreign body in the nose, medication and so on. 1. Symptomatic hemostasis: make the baby quiet, avoid emotional tension, lean forward, can be inserted into the nasal cotton, press the nose of the bleeding side of the nose, cold compresses on the nasal cavity, bleeding can be stopped after a few minutes. For the bleeding is still more than, need to be applied by the specialist physician petroleum jelly gauze strips, etc. to stop bleeding, if the nasal vestibule after filling, the back of the nose is still bleeding, should be filled with the back of the nose, such as the seriousness of the condition of the phenomenon of shock, the need for immediate transfusion of blood or fluids and other treatments. 2. Define the cause (1) Nasal foreign body: the baby will play with objects into the nasal cavity secondary infection, causing mucous membrane erosion and bleeding, need to be removed by a specialist. (2) Trauma: the baby fell and hit the nose, or violent coughing, nose picking caused by nasal vestibule erosion, can lead to nosebleed, need to avoid the above behaviors, coughing serious need to actively treat cough. (3) nasal inflammation: secretions accumulate in the nasal cavity, nasal vestibule, causing dryness, itching and pain and other discomforts, the baby often digging the nose due to the baby’s hands, the treatment can use physiological sea saline local nasal spray, if necessary, you can use nasal glucocorticosteroids, such as mometasone furoate nasal spray, to reduce the local edema and so on. One year old baby nosebleeds may also be related to other causes, it is recommended to consult a doctor in order to clarify the cause of the disease, standardized treatment. All of the above drugs should be used under the guidance of a physician.