中文摘要：

本文通过对比分析了市场中居民的时间偏好异质性和政府发展战略的政策异质性特征在两极分化中的不同角色，基于新结构经济学的视角构建了一个不平等理论：由时间偏好差异表征的市场异质性诱发的两极分化可以通过内生主观贴现率（耐心）得以抑制；而政府采纳的发展战略越是背离比较优势，其政策异质性就越大，如果政策倾斜程度过大就会破坏社会平衡机制，触及警戒线，诱发两极分化。

英文摘要：

Via making a contrastive analysis on the different roles of market time prefer- ence heterogeneity and policy heterogeneity of development strategy on the polarization, this paper builds a theory of inequality. The market heterogeneity itself would induce and restrain the polarization. However, the more the development strategy by government deviates from the comparative advantage, the more policy heterogeneity becomes. If the preferential policy become too much, the balance mechanism would be destroyed to touch the warning line to evoke the polarization.