ABSTRACT The evaluation of the policy effect of total carbon emission control policy (TCP) is crucial to achieve high-quality economic development in China. This paper measures the low-carbon total factor productivity (LCTFP) of 282 Chinese cities from 2010 to 2021, and examines the impact of TCP on LCTFP through differences-in-differences (DID) method. The results show that TCP can effectively improve LCTFP in policy implementation areas. TCP has a stronger LCTFP promotion effect on eastern cities, resource-based cities and higher-level cities. Technological progress effect and industrial structure effect are important channels for TCP to improve LCTFP. TCP has a negative spatial spillover effect on LCTFP. This paper provides valuable references to promote the implementation of TCP in China.