The hazards of squinting include eye fatigue, deepening myopia and astigmatism, which are analyzed as follows: 1. Eye fatigue: some children like to squint to see things, although they can see things more clearly, but it is easy to cause eye fatigue; 2. Deepen myopia: if children themselves have myopia, and then squinting to see things, it is easy to lead to myopia deepening, if only have the habit of squinting, but also to correct in time, otherwise it is also easy to lead to vision loss; 3. Astigmatism: children squinting will squeeze the cornea, time is likely to change the corneal curvature, it is likely to form new astigmatism. Children squinting may have other hazards, it is recommended to go to the hospital in time to identify the causes, so as to facilitate targeted treatment.