Babies who still blink when they fall asleep are usually associated with physiological factors, conjunctivitis, inverted eyelashes and other factors. 1. Physiological factors: If the baby falls asleep and has nightmares, it may cause shallow sleep, thus causing frequent blinking. And at this time, the baby is also more fearful inside during sleep, easy to wake up. 2. Conjunctivitis: related to infection with bacteria, viruses and chlamydia, or inflammatory reaction caused by stimulation of external factors. It is also known as red eye in clinical practice. The onset of the eye will cause redness, swelling, pain, itching, increased secretion, so the baby will blink frequently when sleeping. 3. Inverted eyelashes: mainly refers to the growth of eyelashes to the back, continuous growth repeatedly stimulate the conjunctiva, will produce discomfort, thus causing frequent blinking. Baby blinking while asleep, may also be caused by peripheral neuritis, epilepsy and other diseases, such as symptoms persist, it is necessary to go to the hospital to receive examination, and then targeted treatment.