With integrative trend of world economy and the development of socialism market economy system, and also with the rapid increasing of international communication, quantities of bilateral and multilateral treaty. So the research, on how to deal With the relationship between domestic law and international law,
and how the international law and habit is suitable to international law problems at home, is very important
With the world economic integration with the development of China's socialist market economy system unceasingly thorough, international frequently communicating, bilateral and multilateral treaty in the number of rapid growth, so how to deal with domestic law and international law and the relationship between the international law and habit in domestic applicable international law problem how research is of great significance.