The fastest stage of myopia rise in children is during the sensitive period of vision development, usually around 3-8 years old, this stage is the high incidence of myopia development. Therefore, in order to avoid this situation, it is recommended that children must pay attention to the correct eye habits in general, when reading to keep the reading distance at about 35-40cm, reading time should not exceed 2 hours a day, every half hour to rest for about 10 minutes. Secondly, children must spend more time outdoors, which is the most effective way to prevent the development of myopia, and if they can spend 2 hours outdoors every day, the incidence of myopia will be greatly reduced.