The climate change and CO2 emission embodied in international has been focused actively in the past decades.As one of the top energy consumers, China has been undergone great pressure to reduce the CO2 emissions.However, to check the duty of emissions fairly between trade partners, it is crucial to grasp the source of emissions firstly.To examine this issues analytically, this paper employs a revised input-output model to investigate the CO2emissions embodied in Chinas export in 1999-2008.The key results indicate that the carbon emission embodied in exports has risen from 0.38 Gt in 1999 to 1.19 Gt in 2008, in which 12%-24% consumed by demands of overseas;there are 5 industries mainly originating the embodied carbon in Chinas exports exported to the USA, EU and Japan should be responsible for nearly 80% of its emissions.Consequently, with the climate change negotiation having had at best no effect on emissions globally, it is necessary to consider the responsibilities from both side of the producers and consumers on estimating CO2 emissions during the international negotiation.Policy implications from the numerical results obtained are discussed finally.