Children always blink their eyes, consider that it may be related to personal habits, infections, inverted eyelashes, dry eyes and other reasons. 1. Habits: Some children unconsciously develop the habit of blinking all the time, which can’t be stopped for a while. 2. Infection: Bacterial, viral and other pathogenic microorganisms infection, induced conjunctivitis, keratitis and other diseases. Local inflammation stimulation may cause eye itching and pain, and children always blink. 3. Inverted eyelashes: Canthus may lead to inverted eyelashes. Inverted eyelashes can irritate the cornea of the eye, which may also cause the child to blink all the time. 4. Dry eye: Prolonged studying and watching TV may cause dry eye. The eyeballs are not able to be lubricated by fluids in a timely manner, which may also cause children to blink all the time. There may be other clinical reasons why children always blink. It is recommended to take your child to the ophthalmology department of the hospital to clarify the cause.