Abstract: Based on relevant data of China’s provincial carbon emissions, the differences of carbon intensity in different regions of China were discussed by using Theil index in this paper. The regions included Silk Road Economic Belt, Maritime Silk Road, BeijingTianjinHebei Economic Area, the northeastern economic region and Yangtze River Economic Belt. The spatial econometric model was also used to analyze the convergence of carbon intensity. The results showed that the regional differences of China’s carbon intensity were obvious, and the intraregional difference was greater than the interregional one, and the difference in Silk Road Economic Belt was the most obvious while the difference in the northeastern economic area was the most nonobvious. What’s more, there was no β absolute convergence problem in carbon intensity among the provinces in China, but there was β conditional convergence and the convergence rate was weakly 2.65%. Therefore, the government should make unified and diversified policies according to different regions.