The long-term energy international contract is the long-term agreement between the country and the country, the country and the foreign corporation or the host country corporation and the foreign corporation, that refers to energy exploration, energy development, energy supplies, energy trade and energy use and so on.

Although,international energy cooperation has different forms,energy enterprises are the ultimate actors as a micro main body,which takes part in the international energy cooperation.

With the globalization of energy sources, international energy cooperation has become a common concern all over the world.

With the globalization of energy sources,international energy cooperation has become a common concern all over the world.

The paper studies the supply-demand history of international energy and generalizes its macro features.

Study on International Contract Application of Law;

It is proved that the international contract of civil engineering construction for Ertan Hydropower Station is a good model since it has practiced for about 7 years.

The international contract is a contract that exists the materiality contact with two or more than two nations.

Research on 《United Nations Convention on the Use of Electronic Communications in International Contracts》;