1.Pay attention to eye time, after watching computer, TV and books for 30~40 minutes at close range, you must look far away (blue sky and white clouds) for 10 minutes to let your eyes fully relax. 2, daily outdoor exercise for more than 1 hour, more kite flying, more table tennis (with yellow ball) 3, do not lie on the sofa or bed to read, watch TV, play with cell phones, do not read in strong light or low light, do not look at the phone on the bus, do not look at the phone while walking. 4, 25 times in the morning and evening to see far and near to eye training, to increase eye adjustment sensitivity. 5, dietary considerations: ① eat more food containing collagen lutein, such as pork rinds pig’s feet, western bluebells and carrots (carrots are fat-soluble, must be eaten over oil) ② do not consume too much sweet food, especially when fasting do not eat sweets. ③ eat less snacks, avoid partial food, eat more fruits, vegetables, soy products, animal liver, etc. 6.Ensure sleep: you should keep more than 8 hours of sleep every day.