The myopia rate of elementary school students is increasing year by year, to protect the eyes and keep away from myopia, we should do the following three points: one, enough outdoor activities: this is the most important, but also free of charge to protect the eyes of the method, two hours a day, more than ten hours a week, outdoor exercise is very clear, outdoor more than just sports, including reading and learning in the outdoors. Second, reduce the close proximity of high-intensity eye: taboo 20-20-20 rule, the general distance between the eyes in 33-40cm, 20 minutes after the eyes to the distance 20 seconds, that is, 6m away from the lookout for 20 seconds, you can effectively alleviate the fatigue and tension of the eyes. Third, do not use too many electronic products: if homework or study above must be used, it is recommended that the larger the screen the better, the best is the TV screen or projection screen, font enlargement, the distance to put far away, generally in the 3-5m above the best results. If you do the above three points, the vast majority of eyes can stay away from myopia.