Iran is one of the major countries with oil and gas resources and large potential of production. For many years，it has implemented domestic policies such as substitution of gas for oil，energy subsidies，improvement of energy efficiency and construction of refineries，in order to promote sustainable development，social stability as well as domestic oil product security. Since 1990s，Iran has gradually opened up its oil and gas industry by adopting the method of buy back. It considers the promotion of oil and gas exportation as a long term strategy，advocating for an oil price level that reflects the real income of the unit exportation and for euro as the currency of settlement for international oil trade in the place of US dollar.