Children keep blinking their eyes may be caused by pediatric Tourette syndrome, inverted eyelashes, dry eye, and other causes such as conjunctivitis. 1. Pediatric Tourette Syndrome: The etiology of pediatric Tourette Syndrome is still unclear, and it is considered to be related to genetics, psychological factors, environmental factors and other reasons. Patients will appear blinking, nodding, shrugging, pouting, barking, burning sensation in front of the eyes and other manifestations. If the children have pediatric Tourette Syndrome, it will be manifested as blinking all the time. 2. Inverted eyelashes: Inverted eyelashes may be caused by congenital lid entropion, lower eyelid redundancy, infection, trauma and so on. The patient will have photophobia, tearing, foreign body sensation, eye pain and other manifestations. In addition, let the children appear inverted eyelashes, eyelashes irritate the eyes, easy to cause blinking all the time performance. 3. Dry eye: dry eye is caused by insufficient tear secretion and excessive tear evaporation. Patients will show dry eyes, foreign body sensation, eye fatigue. When children feel that there is a foreign body in their eyes, they may have the symptom of blinking all the time. 4. Other: children blinking all the time is also considered to be conjunctivitis, eye foreign body and other causes. It is recommended that children who blink all the time need to take their children to the doctor in time for examination, and the doctor will choose the appropriate measures for the cause of the disease.