If your child has been blinking lately, there may be several reasons for this: First, foreign body irritation: see if there is inflammation inside your child’s eyes, or foreign body irritation, inverted eyelashes, etc. The eyes are uncomfortable caused by eye diseases, but they are not serious, so your child is always blinking. Second, allergy: It is very common during allergy season. In addition to blinking, children will rub their eyes and also have symptoms of allergy in other parts of the body such as itchy nose or sneezing and runny nose. Third, excessive eye use: It is very common that children have recently used their eyes excessively, spending too much time using their eyes at close range, or using electronic products too much or too densely, causing blinking after eye fatigue, so pay attention to relaxation, lest your child become nearsighted. Fourth, habitual blinking: less common is that the child may have blinked in the past for the reasons mentioned above, causing the habit of blinking, and later, although the above reasons have been removed, the habit of blinking is formed, and sometimes this can be seen.