本文基于中国省际面板数据检验贸易开放与收入分配的关系,分别考察贸易开放度对基尼系数、城乡收入差距的影响。研究表明,贸易开放对收入不平等具有显著并稳健的正向作用,S-S定理在中国是不适用的。此外,贸易开放与收入分配的倒U型关系也不成立。 This paper examines the relationship between trade openness and income distribution based on China’s provincial panel data and examines the impact of trade openness on the Gini coefficient and urban-rural income disparity respectively. Research shows that trade openness has a significant and steady positive effect on income inequality, and the S-S theorem is not applicable in China. In addition, the inverted U-shaped relationship between trade opening and income distribution does not hold.