Blinking is a normal physiological phenomenon that allows the tear film to be normally distributed on the surface of the eye, thus protecting the cornea, avoiding dryness on the surface of the eye, and preventing external dust from damaging the eye. People normally blink about 15-20 times per minute, but if you blink too often, you should be aware that there is something wrong with your eyes. Children, in particular, should be examined at a regular hospital if they blink frequently. What are the possible reasons for a child’s frequent blinking? 1, visual fatigue Modern society due to external influences and poor learning habits, making many children suffer from early myopia, visual fatigue, and children blink frequently is a protective reflex, by constantly blinking can adjust the curvature of the eye, so that visual clarity. 2. Inflammatory stimulation Conjunctivitis, keratitis, etc. caused by foreign bodies in the eye or bacterial or viral infections, in addition to increased blinking, there are also manifestations such as redness, itching, increased secretions, and tearing of the eyes. Some children have congenital entropion of the eyelid, which causes the eyelashes to fall back on the surface of the eye and irritates the cornea (the surface of the black eye), causing tearing and frequent blinking. 4, neurological stimulation Because the nerve fibers that govern the orbicularis oculi muscle are stimulated, they frequently contract causing the child to blink frequently. 5.Children’s hyperactivity Hyperactivity refers to the sudden, involuntary contraction of a part of the child’s body, such as blinking, wrinkling the forehead, crooked mouth, shrugging shoulders, etc., as well as inattention and hyperactive behavior changes.