Our country, Korea is one of carbon dioxide emitting countries, the world's currently ranked 9. However, Korea, legally binding nature of the Kyoto Protocol that emission reductions are excluded as non-agreement countries of the Kyoto Protocol Annex Ⅰ. It is a condition that can be only voluntary transactions with a focus on participation in CDM projects as currently. Seen the future, South Korea also become a target country of obligation of greenhouse gas reduction is a procedure of only natural, and should be enough preparation for it. The United States and the EU have the law and system which was associated with inhibition of carbon emissions. Tthe United States is no obligation of the parties to the Kyoto Protocol. So, do not go to reduce the amount of carbon emissions obligatorily. However, in the wake of the decision of the Supreme Court so-called the Massachusetts case for carbon emissions regulations, the United States has taken a more positive attitude to reduce the amount of carbon emissions. May be the United States to be a countries of the Kyoto Protocol Annex Ⅰ in the near future. EU has a planning to make any disadvantage by taking the so-called border measures for the importation of goods from countries that do not have a greenhouse gas regulations at the same level as the EU. It is just that contribute to a trade dispute environmental problems such as carbon emissions now becomes competitive problem predictable enough. It is believed that EU-ETS is a good model could be a reference when Korea to introduce emissions trading scheme. First, we need to be to maximize its efficiency by selecting limit total emissions trading system so-called the Cap and Trade scheme in conjunction with the institutional design of carbon dioxide emission rights. In Article 46 of the Framework Act on Low Carbon, Green Growth in Korea, it is clearly the introduction so-called the Cap and Trade system. However, there is a problem that laws and regulations specific to the establishment of carbon emission rights exchange is incomplete. Secondly, when you look at the experience of the EU, free allocation is desirable for early allocation of carbon emission rights. It is considered to be taken such as auction method, the method of market friendly in the long term. If you do the free allocation, the Grandfathering method is the more rational early. It is believed that continue to completion of system to reflect the Benchmarking method is more reasonable in the future. If free allocation, by allowing the amount too excessive, it should be noted problem leading to crash emissions prices does not occur, or neglected efforts to reduce emissions substantially. Third, it can be known from the expanded policies to expand the scope of emissions trading in any stages EU. EU chose the way to go to expand the extent of its use in every stage in the case of CDM / JI. This was a role that will earn the necessary time in which to adapt to the new system operators that emissions trading scheme. It is believed that it would be alternative one can see in consideration when designing the emissions trading system in Korea, introducing emissions trading market. Fourth, the EU will try to so-called the border measures that EU can levy on imports of products from countries that do not introduce measures to combat global warming equivalent to the EU, imposing the obligation to purchase greenhouse gas emissions to importers of the product the fact that it must also be noted that it has been made. If our country does not introduce a carbon emissions trading scheme, may be subject to penalty in export by border measures. Fifth, it is a problem of standardization to carbon emissions trading scheme. The EU-ETS as a system by the state of many of the EU, standardization has been carried out in order to prevent ambiguity due to differences in the gap and recognition between countries. Sixth, it is possible to know that the introduction and after the enactment of the carbon emissions trading scheme, ensuring transparency is required in such as the calculation of the assigned amount simplification of procedures, and the selection of the target company. In particular, it is considered the introduction of the emissions trading scheme shall be and another business opportunity for so-called clean company to concentrate efforts to reduce the carbon dioxide emissions.