In this study, through the analysis on temporal and spatial distribution of PM2.5 concentration in Nanjing area and its relationship with meteorological factors,proposals on the reasonable selection of physical exercise time, place and appropriate sports on college students in Nanjing City, reducing and avoiding the damage of high concentration of fine particles on the body are presented.%分析南京地区PM2.5浓度的时空分布特征及其与气象要素的关系，对南京市大学生合理选择体育锻炼的时间、地点和适当的运动项目，减少和避免高浓度细颗粒物对身体的损害提出建议。
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