Despite the significant political, economic and geographical diversity in China, there is limited research on spatial differences in intergenerational mobility in China. This research aims to fill this gap by exploring the spatial and temporal dimensions of intergenerational educational mobility in China. The data used for the analysis is the 2010–2018 China Family Panel Studies (CFPS), a nationally representative longitudinal general social survey. The analysis incorporates both relative and absolute mobility measures to provide a comprehensive description of intergenerational educational mobility. The results reveal substantial regional differences in intergenerational educational mobility across various economic zones in China, with a rising geographic inequality over time. The southwest and northeast regions stand out as the areas where the educational prospects of the young generation have become not only bleaker but dependent more on their parents. Additionally, this study presents the first education Great Gatsby Curve for China, highlighting the strong relationship between intergenerational mobility and education inequality at the regional level, particularly after China's market reform. The findings highlight the need for regionally targeted policies and levelling up agendas to promote educational opportunities in low‐mobility regions.