The development of a child’s eye is divided into two aspects, one is the development of the local structure of the child’s eye, and the development of the local structure of the child’s eye to adult size is usually around 2 weeks of age. The other aspect is the development of the child’s eye vision, which generally needs to wait until the child is about 5 years old to approach the normal adult vision level. Some children are relatively slow in developing their vision and may need to wait until they are 7-8 years old before their vision can develop to a normal adult level and should reach 1.0 or higher on the vision chart. After the age of 7, there is still a certain plasticity in vision. At this time, as children’s eyes and eyeballs develop, their vision is not completely set, and the plasticity of the eye is also relatively large, so children are prone to develop myopia at this stage. During this period, we need to strengthen children’s eye protection work, first of all, we need to pay attention to eye hygiene, do not let children look at cell phones, TV or books for a long time, each time look at 15-20 minutes, you need to do a distant view or do eye exercises to relieve eye fatigue, to protect the eyes. In addition, we should also pay attention to avoid eye trauma.