Children always blinking when watching TV may be caused by foreign objects in the eyes, visual fatigue, vision loss, etc. It is recommended to go to the hospital in time for examination and treatment. 1. Foreign body in the eyes: If there is a foreign body in the eyes, it will cause uncomfortable feeling to the eyes, and children will blink to relieve it. 2. Visual fatigue: If you use your eyes for a long time and do not rest during that time, it will cause a certain degree of fatigue to the eyes, and then the phenomenon of frequent blinking will occur. 3. Vision loss: when children’s eyesight declines, it will cause them to look at things when they can not see clearly, at this time, they will often blink, and strive to see clearly. Usually pay more attention to cultivate good habits of the baby, if you find an abnormal action, we should go to the hospital in time for examination, do not delay, so as not to cause serious harm to the body.