In the context of the global active response to climate change, the implementation of carbon peak, carbon neutral strategy and the active development of green and low-carbon economy have become the key issue of global sustainable development. By constructing double difference model, taking 30 provinces(due to the lack of data, the statistical data mentioned here do not include the Tibet Autonomous Region, the Hong Kong Special Administrative Region, the Macao Special Administrative Region and Taiwan Province)in China from 2005 to 2021as a research object of empirical analysis, it is found that China carbon emissions trading pilot policy can curb the carbon emissions of pilot areas by mainly promoting upgrading of industrial structure and enhancing the level of technological innovation, but due to the pilot provinces and cities area and pollution degree, effect heterogeneity, including the most obvious effect in Hubei province, suggestions are put forward based on the corresponding policy.

pilot policy of carbon emission right trading  /  carbon emission  /  double difference