Abstract: Carbon emission trade as a powerful measure to reduce greenhouse gas emission is attaching more and more attention around the world.EUETS with its unique mode of operation becomes a model of global emission of greenhouse gases.This paper focuses on analysis of the EUETS’ operation characteristics,methods and system safeguard on the basis of the comparative study of the world’s major carbon emission trading system.Then it discuses the Chinese carbon emission trade at present.Finally,it gives out the ways that we should make the combination of the administrative and market mechanism,increase efforts to train personnel and improve the basic system construction of carbon emission.