There are several possible causes for frequent blinking in children. One is a genuine eye discomfort, such as trachoma, conjunctival stones, visual fatigue, impingement, dry eye, chronic conjunctival inflammation, etc. The second is blurred vision, such as refractive errors like myopia and astigmatism, the third is lead poisoning or lack of trace elements, and the fourth is a neurological disorder. The child should be taken to the ophthalmology department for relevant examinations, such as slit lamp examination and visual acuity examination. Trachoma and conjunctivitis can be treated with antibiotic eye drops; dry eyes and visual fatigue can be treated with artificial tears to relieve dryness, itchiness and foreign body sensation, and to change eye habits and avoid fatigue; impingement can be removed, electrolysis or surgical correction; myopia and astigmatism can be corrected with refractive error; if the child If children with frequent blinking are accompanied by mouth twitching, inattentiveness and irritability, they may be suffering from lead poisoning or lack of trace elements, so they should correct their dietary habits to avoid partial eating, and those with serious lead overload should be given lead removal treatment; for children without any cause, they should be given psychological intervention to distract them and guide them to correct their bad habits. In conclusion, the causes of frequent blinking in children are complex, so parents should not take it lightly, but should promptly take their children to the hospital for diagnosis, and most of them can be cured by comprehensive treatment.