European integration had accomplished its distinguishing success in past two decades. In order to explain the EU's development and possible future, integration studies need a theory which can observe and understand its dynamic process. This article analyses European integration's deepening and widening process by using New Gramscian School framework for the sake of understanding integration's driving force and attribute. New Gramscian School understands the world’s order's constant change by analysing the dialectical relationship among material force, institution and idea. In contrary to European integration studies, this article uses triangle framework of European Commission, European Round Table of Industrialists and Embedded Neo-liberalism to understand the core driving force behind European integration. In sum, this article finds Commission and ERT allied themselves to be transnational historical bloc, who takes embedded neo-liberalism as ideology, legitimized forming European hegemony structure and dominated European integration's deepening and widening.