Babies with nosebleeds in the middle of the night, consider that it may be related to atrophic rhinitis, trauma, deviated nasal septum, coagulation disorders and other reasons. 1. Atrophic rhinitis: the invasion of bacteria and other pathogenic microbial infections, the body can induce a more serious reaction, which may lead to the onset of atrophic rhinitis and other diseases. The patient’s nasal mucosa is in a dry state, prone to rupture of blood vessels bleeding. 2. Trauma: When the nose is traumatized, it may lead to rupture and bleeding of blood vessels in the nasal cavity. 3. Nasal septum deviation: the patient’s nasal septum deviation will affect the normal ventilation function, which may lead to the dryness of the nasal mucosa, easy to make capillary rupture and bleeding. 4. Coagulation dysfunction: patients suffering from hematologic disorders, thrombocytopenia or coagulation factor reduction in the body, prone to nosebleeds in the middle of the night. There may be other clinical reasons that can lead to nosebleeds in the middle of the night. It is recommended to take your baby to the ENT department of the hospital as soon as possible to clarify the cause.