The causes of swollen eyes in newborns may be related to poor sleep, local irritation, non-inflammatory eyelid swelling and other factors, which are analyzed as follows. 1. Poor sleep: newborns with inverted biological clocks will have swollen eyes. 2. Localized irritation: If the newborn cries for a long time, the above situation can also occur due to tear irritation. 3. Non-inflammatory eyelid swelling: if the newborn has allergies, mosquito bites, angioneurotic edema and other conditions, can lead to the above symptoms. Swollen eyes of newborns may also have other causes, it is recommended to go to the hospital in time for relevant examinations, clear causes and then actively treat the symptoms.