To prevent myopia and protect the eyes, attention should be paid to improving the visual environment, standardizing classroom lighting, with the ratio of window light transmission area to classroom not less than 1:6. blackboard without reflections, developing good writing and sitting posture, writing homework for 40-50 minutes should be rested, far-seeing, and doing eye exercises. Do not read or write in walking, riding in a car, lying down, in direct sunlight, or under dim lighting, and also reduce student work and increase outdoor activities. This will help prevent myopia and protect the eyes at the same time. If children have myopia, they should go to the hospital in time for examination, astigmatism and prescription of suitable glasses, develop good hygiene habits in their daily life, eat reasonably, exercise, ensure physical and mental health, correct bad habits and develop good eye habits. Regular eye examinations at the eye hospital, especially after suffering from myopia, timely detection and early corrective treatment.