Children’s eyes keep blinking may be due to overuse of eyes, conjunctivitis, inverted eyelashes, tics, mental overstress and other reasons. 1. Excessive eye use. As children often look at cell phones, watch TV, play video games, too much use of electronic products cause eye muscle fatigue, itchy eyes, dryness and other uncomfortable symptoms, resulting in children often blinking. 2. Conjunctivitis. As the conjunctiva is exposed, it is easy to come into contact with allergens in the air, causing an excessive immune response, resulting in allergic conjunctivitis, which leads to itchy, red and swollen eyes, and the child will blink frequently to relieve discomfort. 3. Tourette’s syndrome. Tourette’s syndrome may be caused by genetic and psychological factors, which manifests itself as sudden, involuntary, non-rhythmic motor tics with frequent nodding and blinking symptoms. 4. Inverted eyelashes. Eyelashes are inverted and grow backwards, irritating the eyes, and the child will also blink frequently. If you find that your child blinks all the time, you should go to the hospital in time and follow the doctor’s instructions for treatment.