Eyelid swelling in infants may be caused by physiological factors, acute injury, allergy, wheals, kidney disease and other factors. 1. Physiological factors: too low a pillow at bedtime, sleep for a long time, may lead to blood reflux in the face, it will cause pediatric eyelid swelling; drink too much water before bedtime, may lead to water retention in the eyes, manifested as eyelid swelling. Generally have no adverse effects on the body, can naturally subside. 2. Acute injury: children’s eyelids suffered acute injury, such as impact, may lead to the baby eyelid area is damaged, will cause eyelid swelling, accompanied by pain, crying and other performance. 3. Allergy: mosquito bites or contact with some allergic substances may lead to localized allergies in the eyelids of infants, which will lead to eyelid swelling, accompanied by itching, redness and other symptoms. 4. Eyelid swelling: frequent rubbing of the eyes with dirty hands may cause bacterial infections, leading to granuloma, causing eyelid swelling, which may be accompanied by eyelid pain, eyelid congestion, tearing and other symptoms. 5. Kidney disease: glomerulonephritis, due to impaired renal function, resulting in sodium retention, can cause swelling of the eyelids as well as swelling of the lower limbs, may also be accompanied by proteinuria. Infant eyelid swelling, excluding physiological factors, parents are advised to take their infants to the doctor as soon as possible for examination and treatment, to avoid continued aggravation of the lesions.