Neonatal runny eyes is relatively common in neonatology, belonging to the scope of consultation and treatment of neonatal ophthalmology, mostly seen in neonatal conjunctivitis. A common disease, generally most of the performance of unilateral flow of tears is common, mainly for the following reasons: 1, lacrimal sac obstruction: the baby was born mostly by caesarean section, the baby born by caesarean section did not go through the birth canal extrusion, the lacrimal sac will appear obstruction phenomenon, easy to cause flow of tears, or increased secretions. 2, amniotic fluid infection: baby in the mother’s tummy, due to the late amniotic fluid is relatively small, and amniotic fluid is easy to contaminate, it may affect the baby, this situation baby may be born with the symptoms of runny eyes. 3, baby fire: some children drink less water after eating milk powder or do not drink water, prone to indigestion of milk powder and cause runny eyes or secretion of eye droppings. 4, conjunctivitis: is usually what we call red eye, this is generally caused by the cold, or the child often rubbed his eyes with his hands, and caused a bacterial infection of the conjunctiva. In short, the newborn’s immune system is fragile, the eyes should also pay attention to tearing, clear etiology, especially to rule out whether it is inflammation or infection, timely intervention and treatment.