In the context of carbon peaking and carbon neutrality,it is important to promote financial resource agglomeration and industrial function division from the city dimension to help reduce carbon emissions.Based on the theoretical correlation mechanism among financial agglomeration,cities'spatial division,and carbon emissions,this study integrates the panel data model,threshold effect,and mediation effect models to explore the direct impact of financial agglomeration on carbon emissions in 285 prefectural cities in China from 2010 to 2021,as well as the carbon reduction effect of financial agglomeration and its mechanism driven by the city's functional division pattern of"developing service industries in the center and focusing on manufacturing industries in the periphery".The empirical results show that the rising financial agglomeration level reduced carbon emissions,and the city's functional division weakened the carbon reduction effect of financial agglomeration,yet this result depended on the relative scale of city center-periphery industries.Industrial structure and technological progress played a significant mediating role,but the growing share of secondary industry and technological progress caused by the city's functional division instead enhanced the positive effect of financial agglomeration on carbon emissions.This research provides policy insights and decision-making references for cities to reduce carbon emissions and promote low-carbon transition from the perspectives of industrial spatial functional division design and financial core area construction.