Digitalization and intelligence are being comprehensively integrated into all fields and processes of eco-nomic and social development,and are key forces to promote the green transformation of China's accelerated develop-ment mode,but the effect of policy practice has yet to be tested.Based on the panel data of 215 cities in China during 2008-2018,this paper investigates the impact of smart city construction pilot policies on carbon emission perfor-mance using a multi-period DID approach.The results show that the smart city construction pilot policy effectively enhances the carbon emission per...