21世纪是知识经济时代，智力资源　　　正逐渐成为最重要的生产要素和分配要素。居民家庭近年来在教育方面的投入越来越大，特别是经济条件优越的高收入家庭更是出手大方。这部分先富起来的家庭一方面具有接受教育的强烈愿望，同时还有着中低收入家庭无法企及的教育支付能力， The 21st century is the era of knowledge-based economy, and intellectual resources are gradually becoming the most important production factor and distribution factor. In recent years, the investment of residents in education has been increasing, especially in the high-income families with superior economic conditions. On the one hand, this part of the first rich families have the strong desire to receive education, at the same time, they have the education ability to pay which can not be achieved by low- and middle-income families.