Abstract: The frequent blinking has become more and more common complaint of children's parents in ophthalmic clinics. It was always dignosed as conjunctivitis or keratitis. In fact, the common causes of pediatric frequent blinking were pediatric dry eye syndrome, refractive error, child Tic disorder, allergic conjunctivitis, and so on. The misdiagnosis of frequent blinking in children not only could delay the proper treatment, but also could make the children suffer from the ocular surface damages related to the eye drops. Therefore, we should thoroughly learn the underlying causes of frequent blinking in children in order to give the proper treatment in time.

Key words: children frequent-blinking, dry eye, allergic conjunctivitis, child Tic disorder