A one-week and eight-month-old baby blinking all the time may be related to conjunctivitis, Tourette’s syndrome, eye fatigue and so on. 1. Conjunctivitis: the baby’s eyes may have conjunctivitis caused by bacterial infection, resulting in conjunctival congestion, which will produce uncomfortable symptoms and the baby will keep blinking. 2. Tourette’s syndrome: blinking all the time may also be related to Tourette’s syndrome, involuntary blinking. 3. Eye fatigue: If you give your baby a long time to look at cell phones, computers and other electronic products, it is easy to cause eye fatigue, which will cause your child to blink. Blinking all the time may also be related to other reasons, such as inverted eyelashes, etc. It is recommended to go to the hospital in time for relevant examinations to clarify the cause of the disease and treat the symptoms.