Abstract: Based on the panel data of 84 cities in China from 2001 to 2008, synthetic control method is employed to analyze the net emission reduction effect of the industrial pollutants in 24 low-carbon pilot cities, and corresponding robustness is verified using placebo test and DID estimation. The research finds: (1) Because of the low-carbon pilot policy, the sewage discharge intensity in six cities covering Tianjin, Nanchang, Guiyang, Kunming, Zhenjiang and Zunyi is significantly decreased. (2) The reduction of SO₂ emission intensity in Xiamen and Zhenjiang, as well as the reduction of dust emission intensity in Ningbo, Qingdao and Zhenjiang, should be ascribed to the implementation of the low-carbon pilot policy. (3) Because of the low-carbon pilot policy, the solid waste use ratio in Baoding, Shijiazhuang and Urumqi is significantly increased. (4) In respect of pollutants type heterogeneity, industrial sewage ranks first in emission reduction effects, successively followed by industrial exhaust gas and industrial solid wastes. (5) In respect of city heterogeneity, urban economic development level, economic structure and administrative level all have a bearing on the policy effects. Given this, the paper proposes that efforts should be made to optimize industrial structure, promote pollution control and emission reduction technologies, improve productivity and urban governance capacity, push forward the low-carbon transition of the city and realize the harmonious development of pollution control and emission pollution and economic growth.