Children’s eyes often repeatedly and inexplicably swollen, may be caused by eye allergies, need to consult a doctor in time, clear and away from allergens. The first time a child is exposed to an allergen (such as pollen, animal dander, etc.) through skin contact or inhalation, it can cause the body to undergo an immune response; when exposed to the same allergen again, the body undergoes a strong reactive change, which leads to an allergic reaction and can result in symptoms such as rashes, redness and swelling of the eyes. In addition, the child’s eyes are often swollen, may also be too much water before bedtime or kidney disease and other reasons. Parents are advised to bring their children to regular hospitals in time to clarify the cause and standardize the treatment under the guidance of the doctor to relieve the swelling of the eyes.