There are several reasons why a child may be blinking. The first cause is blinking due to discomfort caused by dry eyes. This condition can be treated with sodium glass acid drops for relief. The second cause is itchy eyes due to allergies, exposure to pollen, dust, or special irritants that cause conjunctival allergies. This is usually treated with anti-allergy treatment using Orotadine drops. The third cause is eye fatigue caused by excessive use of the eyes, especially the frequent use of electronic products or close reading. Overuse of the eyes will make the tears on the surface of the eyes evaporate too quickly, and frequent blinking can make the tears distributed on the dry corneal surface again. Discontinuing the use of electronic devices or reducing the use of eyes at close range and increasing outdoor activities can usually be relieved in 3-5 days.