Children’s blinking may be caused by inverted eyelashes, eye infections, Tourette’s syndrome and other diseases, and if it persists, it is recommended to consult a doctor. 1. Inverted eyelashes: a series of secondary changes in the conjunctiva and cornea caused by the eyelashes falling back toward the eyeball and irritating the conjunctiva and cornea. Any cause that can lead to lid inversion can cause inverted eyelashes, such as trachoma, lid trauma, etc. Children may blink frequently due to eye discomfort. 2. Eye infections: such as conjunctivitis, keratitis, etc., the child may have a foreign body sensation, burning sensation, itching, photophobia, tearing, increased secretion and other symptoms of discomfort. 3. Tourette’s syndrome: the child may show involuntary, rapid, repeated one or more parts of the muscle movement and vocal tics, in addition to frequent blinking, the child may also have shrugged nose, wrinkled forehead, open mouth, shaking the head, shrug, clearing the voice, snorting the nose and other manifestations. If the child has symptoms of blinking, and the symptoms are not relieved or accompanied by other discomforts, the child should consult a doctor to find out the cause of the disease and carry out the corresponding treatment, and avoid making blind judgment on their own, so as to avoid delaying the disease.