Swollen eyes in infants may be caused by physiological factors, but also may be caused by local allergies, infections or kidney disease and other causes, according to the specific cause of treatment as prescribed by the doctor. 1. Physiological factors: if the baby sleeps poorly at night or cries for a long time, the child may have swollen eyelids, generally do not need special treatment. 2. Infection: infant resistance is poor, if the child has bacterial conjunctivitis, blepharitis and other eye infectious diseases, inflammation stimulation, the child may appear eyelid swelling, congestion and other symptoms. 3. Local allergy: when allergic children are exposed to allergens such as pollen, hair, etc., the allergic reaction can lead to swelling of the eyelids and itching of the eyelids, which can easily cause infants to scratch and aggravate the edema. 4. Kidney disease: nephrotic syndrome and other renal function abnormalities in infants, because of fluid retention in the body, tissue edema, edema first appeared in the loose parts of the tissue, easy to first appear eye swelling. It is recommended that children with significant eyelid swelling should seek prompt medical attention to assess their condition and follow medical advice.