Based on a final energy sector-based emission model and data from the United Nations,World Bank,International Energy Agency and plans released by the Chinese government,three scenarios were designed according to the strength of policies to address climate change in China and project greenhouse gases(GHG)emissions until 2060.We analyzed the time of the GHG emission peak and cumulative emissions for China,as well as their relationships with global GHG emission variation.We found that China will reach a GHG emission peak in 2030(14.4280.748* 109 tCO_2eq)when all existing energy policies fully implemented,and the reduction in cumulative emissions from 2020 to 2060 is 224.382 * 109 tCO_2eq compared to scenarios without mitigation.Accelerating energy target achievement is helpful in peaking earlier.For example,when Chinas energy targets for 2030 are achieved five years earlier in 2025,the emission peak only moves three years earlier in 2027(13.3880.603*10~9 tCO_2eq),and cumulative emissions from 2020 to 2060 falls by 51.746 * 109 tCO_2eq compared with the scenario peaking at 2030.Peaking earlier is significant to total cumulative emission reduction.If all countries accomplish their INDCs,three years ahead of Chinas peak of 2030 to 2027 is unlikely to change the time of the global peak in 2031.However,the global peak declines from 53.489 * 109 tCO_2eq to 52.354 * 109 tCO_2eq,and promotes declining emission trends from 426*10~6 tCO_2eq/year to 438 *10~6 tCO_2eq/year from 2031 to 2060.