Importance of Global Warming and its’ effects on natural resources, plants, animal and in general on human life are among subjects that received attention of scientists and politicians in recent years. United Nations Framework Convention on Climate Change as a legal document has been signed in Rio and approved by governments. To control and reduced gas emission and keep them in certain level Kyoto Protocol was agreed. I.R. Iran was among those governments signed convention in Rio and ratified later. Acceptance and ratification of Kyoto Protocol by the Government of I.R. of Iran announced officially to the secretariat. Hence, from two points of view, technical and political, this issue could be considered.