Children’s eyes are always blinking, which may be caused by vision loss, impingement, allergic conjunctivitis and other factors. It is recommended that parents should take their children to the hospital in time, do the relevant examinations, make a clear diagnosis, and then give appropriate treatment. 1. Loss of vision: Usually children with loss of vision will blink their eyes to see things clearly because they can’t see the food. 2. Inverted eyelashes: Generally, due to congenital dysplasia, children will have inverted eyelashes, which will lead to frequent blinking symptoms, accompanied by watering eyes, foreign body sensation, and frequent eye rubbing. 3. Allergic conjunctivitis: it is a hypersensitivity reaction of the conjunctiva to external allergens, and when children feel uncomfortable and itchy eyes, they will blink their eyes to relieve the symptoms. At the same time, accompanied by eye itching, redness, swelling, foreign body sensation and other phenomena. 4. Tourette’s syndrome: Tourette’s syndrome is common in children and adolescents, mainly recurring multiple parts of the motor tics, the more common is blinking. Children’s eyes always blinking may also be related to other causes, it is recommended to seek medical attention in a timely manner, in order to clarify the cause of the disease, early treatment. In addition, it is recommended that children pay attention to protecting their eyes and avoid rubbing their eyes with their hands to avoid infection.