The objective of this paper is to investigate the factors that explain the economic interdependence of China and U.S. within the world-system view of Wallerstein. Both the international realities and domestic forces affecting each country will be considered, as will their hierarchical positioning in a worldeconomy in which states interact according to their productive capacity and aggregate productive value. Finally, there will be an analysis of how the power dynamics in finance and commerce contributed to the acceleration ofthe interdependence between the two nations beginning in the 1970s.The crisis of American hegemony will not be seen as the end of the capitalist system, as Wallerstein suggests, but rather as a restructuring necessary to ensure the continuation of American economic power. To examine this restructuring, the philosophy of Luis Fiori will be used. Fiori believes that in order for a great power to be able to continue to accumulate influence, it is necessary for that power to redefine its adversaries. When this dynamics begins, semi-peripheral states see the opportunity of coming closer to the central state.What happened after the 1973s crises was the relocation of world labor toSoutheast Asia drawn in by the United States, what made possible China enters the international economy. From then on, the countries establish a relationship based in the complementary productivity and economic interdependence, which ties their economic futures together.