Frequent blinking of baby’s eyes is most commonly caused by visual fatigue, allergic conjunctivitis, inverted eyelashes, refractive errors and other causes in clinical practice. If babies watch TV, cell phones and other electronic products for a long time, it is easy to cause eye fatigue, or dry eyes and other discomforts, need to blink frequently to relieve fatigue, improve dry eyes and so on. The conjunctiva of the eyes, due to contact with external allergens, is prone to allergies, itchy eyes, red eyes and other discomforts, which can be manifested as frequent blinking. Inverted eyelashes can cause foreign body sensation and other discomforts due to the friction of eyelashes on the surface of the eyeball, which can be manifested as frequent blinking. Blurred vision due to refractive error may be manifested as frequent blinking. Parents need to take their babies to the hospital in time to get a clear picture of the cause of the blinking.