One and a half year old baby nosebleed may be dry nasal cavity, bad nose picking habits, disease factors and other reasons related to the adjustment of humidity, local pressure to stop bleeding, medication and other methods of relief. 1. Nasal dryness: baby nasal dryness caused by nosebleeds, you can hold the baby face down or prone position, so that the outflow of nosebleeds can be quickly discharged from the body, to avoid tilting the head so that the outflow of nosebleeds back suction trachea caused by asphyxiation phenomenon. At the same time, we should pay attention to maintain a certain degree of humidity in the room, avoid too dry. 2. Bad nose picking habits: If you blow your nose hard or pick your nose repeatedly, you can use your hand to stop the bleeding or apply wet compresses on the bridge of the nose to help stop the bleeding, and you should change your bad habits. 3. Disease factors: such as leukemia, immune thrombocytopenia, etc. may lead to the baby nosebleed, need to consult a doctor in a timely manner, as prescribed by chemotherapy or hormone therapy. One and a half year old baby nosebleed may also have other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, give targeted treatment or treatment.