通过抽样调查方法对保定市中小学生视力不良影响因素进行调查,了解引起视力低下的原因,以便采取相应措施。增加户外活动时间、保持良好的用眼习惯、合理健康的膳食结构对中小学生的视力健康有明显的积极影响。 By means of sampling survey, we investigated the influencing factors of poor eyesight in primary and secondary school students in Baoding to find out the causes of low vision, so as to take corresponding measures. Increase the outdoor activities time, maintain good eye habits, reasonable and healthy diet has a significant positive impact on the eyesight health of primary and secondary school students.