This work was elaborated with the objective to present the probable effect how much the intensity of the ambient impacts, assimilating a statistics concerning the Ambient Legislation where the Commerce of the Carbon Credits invigorates. On the basis of the protocol of Protocol of Kyoto in intention to stimulate the Brazilian market of carbon, also we cite the applicable legal regimen to the Mechanism of clean Development (MDL) as well as the World-wide Organization of Comrcio (OMC) as warranting in the fulfilment of the agreements and rules with intention to prevent conflicts between the commerce and the environment With objective greater in the combat to the global heating, the present work in such a way presents how much negative positive factors to the commercialization of the carbon credits in the world-wide market. However, we all become gift the importance of the operator of involved right in the process in the purchase of the carbon credits determining the approval of the ambient multilateral agreements that guarantee the conservation of the natural resources. PALAVRAS-CHAVES: Mechanism of Clean development (MDL). Ambient legislation. Carbon credits. Protocol of Kyoto. World-wide organization of Comrcio (OMC)..