Children’s eyes are swollen in the morning, may be too much water before going to bed, a long time crying or rubbing the eyes with their hands, etc., may also be caused by eye allergies, kidney disease. 1. Drinking too much water before going to bed: If a child drinks too much water before going to bed at night, the excess water will easily accumulate in the eyelids and other loose parts of the tissue, and the eyes may be swollen the next morning. 2. Prolonged crying: If a child cries for a long time, resulting in poor blood circulation in the eyes, the eyes may be swollen in the morning. 3. Rubbing the eyes with hands: If a child wakes up in the morning and rubs his eyes with his hands without paying attention to eye hygiene and sanitation, it may cause puffy eyes. 4. Eye allergy: If the child’s eyes are allergic to allergies, resulting in increased vascular permeability of the eye, tissue oozing too much, the eyes may also appear swollen in the morning. 5. Kidney disease: If the child suffers from kidney disease, such as acute nephritis or nephrotic syndrome, etc., the eyes may be swollen in the morning. If the child’s eyes are swollen in the morning, you can wash your face with cold water and observe for a while. If the symptoms of puffy eyes do not go away, it is recommended to go to the regular hospital for timely consultation and examination, and timely treatment.