摘要：收入流动性是理解居民收入分配不平等的重要视角。本研究以收入排名变化为基础重构收入流动性指标，探究数字鸿沟对居民绝对和相对收入流动性的影响。研究发现，数字鸿沟对居民的绝对收入流动性具有显著负向影响，并会导致居民收入阶层向下流动和不流动，抑制居民收入阶层向上流动。机制分析发现，数字鸿沟会通过抑制创业和削弱信贷可得性来影响居民的收入流动性。异质性分析显示，数字鸿沟对非老年人、中西部地区和农村居民的收入流动性存在显著负向影响。本研究深化了数字鸿沟对居民收入流动性影响的认识，为改善与优化居民收入分配提供了有益参考。

Abstract: Income mobility is an important perspective to understand the inequality of income distribution. This study reconstructs income mobility indicators based on changes in income rankings and explores the impact of the digital divide on residents’ absolute and relative income mobility. The study found that the digital divide has a significant negative impact on the absolute income flow of residents, and will lead to the downward flow and non-flow of residents’ income class, and inhibit the upward flow of residents’ income class. Mechanism analysis finds that the digital divide will affect residents’ income mobility by inhibiting entrepreneurship and weakening credit availability. Heterogeneity analysis shows that the digital divide has a significant negative impact on the income mobility of non-elderly, central and western regions, and rural residents. This study deepens the understanding of the impact of the digital divide on residents’ income mobility and provides a useful reference for improving and optimizing residents’ income distribution.