本项目将研究城市规模对中国城市内部居民工资不平等的影响，探索在城镇化进程中正确处理好居民收入分配关系的内在机理，更有效地处理中国城市发展中的效率与平等关系的政策途径。首先运用微观数据测算中国不同规模城市的内部居民工资不平等程度,验证中国是否存在规模越大，工资越不平等的城市工资不平等溢价；第二，构建异质性劳动者的空间选择均衡模型，分析城市规模对异质性劳动者工资的差异性影响，进而增加工资差距的内在机制，并利用微观数据分解测算中国城市工资不平等溢价的来源；第三，在确认现阶段中国存在城市工资规模不平等溢价的前提下，构建以中国实践为背景的理论模型，并实证分析中国大城市中的规模工资不平等溢价的内在机制，测算大城市中集聚经济的要素偏向度、资本—技术互补机制力度以及劳动力流动带来的劳动力市场结构变化对工资不平等的影响机制；第四，就中国的城市化发展战略及政策、收入分配政策以及完善劳动力市场政策提出相关建议。

The project will study on how the city size impact the city residents wage inequality, reveal the mechanism of income distribution in the process of urbanization, explore the policies of balancing efficiency and equality of China’s urban development. First of all, using the micro data to calculate the Gini coefficient of urban residents wage across cities, we will inspect whether there is city size wage inequality premium which means higher inequality in bigger city; secondly, we will analyze the mechanism of wage inequality premium by constructing the heterogeneity labor of Rosen-Roback Model, and decompose the resources of inequality premium by using the micro data econometrically; thirdly, we will construct the mathematical model of inequality premium in big city according China’s features in the context of confirming the inequality premium in China, and empirically analyze the impacts on wage inequality from the factor bias of agglomeration, capital-technology complement and the changes of labor market because of immigration; fourthly, we will offer a proposal about China’s urbanization development strategy and policy, income distribution policy and improving the labor market policy.