Children’s eyes are swollen after a nap may be caused by postural influence, drinking more water, conjunctivitis and other reasons. 1. positional influence: in sleep, if the baby’s head is too low, such as no pillow, may lead to the child postural edema, general adjustment of position, can reduce the child woke up with swollen eyes symptoms, do not need special treatment. 2. Drinking more water: If the child habitually drinks a lot of water before bedtime, the child’s kidneys do not have strong excretory function, can not be discharged from the kidneys in a timely manner, which may lead to the child woke up with swollen eyes. 3. Allergic conjunctivitis: if the child is allergic, sleeping on the pillowcase, duvet cover dander, fiber allergy, the child may appear eyelid edema, may also be accompanied by itchy eyes and other uncomfortable symptoms. Children sleeping with swollen eyes can also be caused by blepharitis, kidney disease, etc. If it continues to be unrelieved, it is recommended to consult a doctor in a timely manner to assess the condition and follow the doctor’s instructions for treatment.