Discrepancies between China and the United States in the East Asian Region 2009-2017

China has mostly the capacity to put under question the politics of United States, because this country possesses important economic power, immense infrastructures and ammunitions, political power and has impact on the countries of East Asia region. Specially, in recent years, China's military modernization has persisted along with its economic growth. Because the United State disregarded East Asia Region during George w. Bush presidency, China intensified its influence in East Asia region and increased its interests and extensive economic interactions with the countries of this region.The present research elaborates on the main discrepancies between Beijing and Washington in East Asia region and on the effect of these discrepancies on their mutual relationship. What is the effect of discrepancies between China and United States on their relations? To answer this question, the authors believe that political, economic and security- military discrepancies, especially during the Obama administration, caused ascending tension between the two countries in regional and international arenas.After explaining the conflicts between China and United States in three main political, economic and security arenas, this article scrutinizes the impact of these conflicts on the relations of these two countries.