Children’s eye blinking pain, in the ophthalmologic clinic is most common in keratitis, visual fatigue, intraocular foreign body, inverted eyelashes, glaucoma and other lesions. 1. Keratitis. It is most commonly caused by infectious factors, such as bacteria, viruses, fungi and other pathogenic microorganisms infecting the cornea and causing inflammation. 2. Visual fatigue. Prolonged viewing of electronic products or studying for a long period of time can lead to dry eyes, pain and other symptoms. 3. Foreign objects in the eye. A foreign body rubbing against the surface of the eyeball can cause an obvious foreign body sensation when blinking. 4. Inverted eyelashes. Eyelashes grow in an abnormal direction, and if they grow inward and rub against the surface of the eyeball, it will cause an obvious foreign body sensation. 5. Glaucoma. Acute elevation of intraocular pressure, resulting in significant pain in the eyeball, mostly caused by congenital developmental abnormalities. The specific causes need to be examined by a doctor and effective treatment programs should be taken in time.