Myopia is related to both genetic and environmental factors, therefore, myopia prevention also needs to start from these two aspects. 1. Genetic factors: If both parents are highly myopic or one of them is highly myopic, the risk of inheritance is higher for the child, and the child needs to be screened for refraction as early as possible to reduce the eye burden as much as possible in ordinary life. 2, about environmental factors: currently children generally have insufficient time for outdoor activities, heavy study load, the use of electronic products too often. Reduce children’s eye time, cultivate good habits from an early age, maintain proper ? reading distance and reading habits, encourage children to participate in more outdoor activities, relax the adjustment, regularly review the vision, and come to the hospital early if problems are found.