Abstract: China as the world's largest CO2 emitter has thus far been undergoing acute pressure of carbon mitigation. To achieve emission-reduction targets set by the government, it's necessary to analyze inter-regional carbon linkage of China, and thus to develop differentiation strategies to reduce carbon emissions. By building the Multi-Regional Input-Output(MRIO)Model and using China's regional input-output table 2007, this study investigates the inter-regional carbon linkage of China from the perspective of inner-regional carbon emission multiplier effect, inter-regional carbon emission spillover and feedback effects, by dividing China into three regions, namely East, Central and West. Results show that the inner-regional carbon emissions multiplier effect of the East region is significantly weaker than that of the Central and West regions; the inter-regional carbon emissions spillover effect of the East and West regions on the Central region is much stronger than that of the Central and West regions on the East region; the inter-regional carbon emissions feedback effect is very small and so is the regional gap; the total effects of energy-intensive sector far exceeds that of the rest of sectors. The policy implications on China's carbon-mitigation issue from both regional and sector levels are also discussed finally.