Teenagers should cultivate good eye habits, reasonable diet, increase the length of outdoor activities, control the use of electronic products, etc. to maintain eyesight. 1. Cultivate good eye habits: first of all, teenagers should do to cultivate the correct reading and writing posture, do not walk walking to read, lying in bed to read, reading in the car and other bad eye behavior habits. And pay attention to avoid over-exertion when using eyes, to prevent the occurrence of visual fatigue. 2. Reasonable diet: Reasonable diet to supplement the body’s nutritional needs, in order to promote the normal operation of the body’s various organizations to go up, naturally, can also achieve the effect of eye protection, eyesight conservation. 3. Increase the length of outdoor activities: Although it is said that young people’s learning task is relatively heavy, but in the study at the same time, but also to do a combination of work and leisure, especially pay attention to the appropriate extension of outdoor activities, outdoor activities can satisfy the eyes on the need for sunlight, outdoor activities in the distance can be let the eyes get relaxation. 4. Strictly control the use of electronic products: Nowadays, the excessive use of electronic products is the main reason for youth vision damage. Therefore, young people need to strictly control the use of electronic products, as far as possible away from all kinds of electronic products. Do a good job of vision care, for contemporary teenagers is particularly urgent thing, not only need to participate in the teenagers themselves, but also need to family, school and social cooperation.