Swollen eyelids in children are mainly associated with kidney problems, infectious factors, allergies, and abnormal sleep positions. Eyelid swelling is a sign of excess water retention in the eyelids and is very common in children. Usually parents’ first reaction to swollen eyelids in children is kidney problems, such as nephritis and kidney disease. But there are other factors that cause eyelid swelling in children, as follows: 1, increased exudation when suffering from conjunctivitis, resulting in increased tissue fluid, resulting in swollen eyes; 2, staying up late at night, watching TV, cell phones, computers, etc., resulting in less sleep time, and easy to wake up in the morning with swollen eyes; 3, allergic factors can cause eyelid swelling, especially in spring and autumn, while rashes and asthma may appear, and mosquito bites also lead to eyelid If the eyelids are swollen and combined with other manifestations, such as edema, abnormal urine color, low urine volume, poor mental health, etc., it is necessary to pay attention to the situation and go to the hospital in time.