Post 90s’Students generally lack of study motivation.How to make higher vocational college stu-dents become high quality talents is still a problem for high vocational colleges.From psychological perspective, combining class building and quality expansion activities,this paper explores the application of psychological knowl-edge in class building and quality expansion activities.%90后的高职生普遍缺乏学习的动力，如何把高职生培养成高素质技能型人才是高职院校亟待解决的问题。本文结合班级建设和素质拓展活动，从心理角度出发探讨了心理学知识在班级建设和素质拓展活动中的应用。
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