The prevalence of myopia in China is the highest in the world. A recent survey shows that the prevalence of myopia in China is 22.78% for elementary school students, 55.22% for secondary school students and 76.74% for college students. Myopia in children and adolescents has become a social problem, which is related to social factors, environmental factors, personal eye habits and many other aspects, so the prevention of myopia should start from the following four aspects. Social prevention The increasing incidence of myopia among children and adolescents is closely related to the high level of technological development in society: the use of electronic products such as televisions, electronic computers, cell phones and game consoles has greatly increased the frequency of close eye use among children and adolescents. In addition, nowadays, schools and parents expect too much from their children, children’s homework is getting heavier and heavier, the competition pressure for higher education is also increasing, and more and more time is spent on books, which is also a cause that cannot be ignored, especially students in the graduation class have a higher percentage of myopia than those in the non-graduation class. So first of all, we need to get the support, help and understanding from the society, and secondly, reduce the time children spend using electronic products and study a little less stressful, so that children can be relatively relaxed in the process of eye development. Second, school prevention First of all, the school environment facilities: classrooms are spacious and bright, light distribution is scientific and reasonable, the height of the tables and chairs is appropriate; second, the school should regularly carry out vision checks, strengthen the education of eye care, publicity, and urge students to seriously do eye exercises; finally, regular transfer of seats ……, as long as the effective method we have to use. Third, family prevention Parents should create a good learning environment for their children, such as lighting with 8-15 watt fluorescent lamps or 25-40 watt light bulbs is appropriate. The next thing is to pay attention to the cultivation of good eye habits for children: sitting upright when reading, eyes about 1 foot from the book, writing hands about 1 inch from the tip of the pen, reading 15 minutes per hour break, eye distance from the TV screen is 5 times the diagonal of the TV screen, etc. In terms of diet, parents should also provide comprehensive nutrition for the health of children’s eyes. Fourth, their own prevention As a child, a student should actively participate in physical exercise and outdoor activities to enhance physical fitness and improve the regulation of the eye muscle; consciously do eye exercises; not picky, not partial food; early to bed and early to rise, reasonable study time, consciously protect their eyes.