Newborns with nasal congestion and open mouth breathing may be caused by rhinitis, inferior turbinate hypertrophy, adenoid hypertrophy and other diseases, can be improved through general treatment and other treatments. 1. rhinitis: if the rhinitis caused by the newborn’s nasal congestion open-mouthed breathing, you can use physiological sea salt water to clean the nasal cavity under the guidance of the doctor, you can also use hot towels to compress the baby’s nose, to promote the discharge of secretions. 2. inferior turbinate hypertrophy: newborn nasal congestion with open mouth breathing may be caused by inferior turbinate hypertrophy, usually should pay attention to develop good hygiene habits, avoid contact with allergens. 3. Adenoid hypertrophy: adenoid hypertrophy may also cause nasal congestion in newborns with open mouth breathing, parents need to pay attention to the child’s nose to keep warm, to prevent colds; but also to avoid the high incidence of influenza to take the child out, so as to avoid contact with pathogenic bacteria, so as to exacerbate the symptoms. If a newborn’s nose is stuffy with open-mouthed breathing, parents are advised to take the child to a regular hospital to get a clear picture of the cause of the condition and to treat the condition under the guidance of a doctor.