SectorsCO_2 emissions is one of the largest drivers of accelerated global warming and China needs to urgently face this environmental issue. The mitigating order of sector and development countermeasures are significant for mitigating CO_2 emissions. Promoting industrial structural upgrades and environmental technology are two important approaches currently used by China to mitigate greenhouse gas emissions. Here,from the aspects of structural adjustment and technological progress,a general framework for the mitigating order of sector and development countermeasures was innovated to mitigate CO_2 emissions and release environmental pressures. This study was based on the Ghosh input- output model and sensitivity analysis. We analyzed all sectors in China and combined them into 40 sectors,adopted an input- output table for 2002 and 2012,and CO_2 emission data. In order to better control growth in CO_2 emission from sectors we analyzed five typical sector indicators. We found that technological progress should be preferentially carried out in 18 sectors(including nonmetal mineral products) to reduce emissions; 13 sectors(including oil and gas extraction),should limit development speed because this would have a large effect on emissions and low economic impact. We arrived at four countermeasures. On the one hand,further applied research has proven the practicality and scientificity of this general method;and on the other hand it provides a solid foundation for government and reference of emission reduction policies to adjust industrial structure,develop environmental technology and reduce carbon emissions. The method here is applicable to many countries and regions that want to achieve a low carbon economy.