The economical globalization has led the region economic cooperation development. In 2002 Euro was released, the European integration is being made an epoch . US and Canada, Mexico have set up the North America free trade area in 1994, and it will start the Free Trade Area of the Americas negotiations. Under this background, this thesis set out the cooperation between China and ASEAN with the approach New-functionalism. This thesis divides into six chapters to study the cooperation between China and ASEAN cooperate of economic cooperation with the China, the first chapter is an introduction, in the second chapter Neo-functionalism will be explored . In the third chapter, the modernization of China, the evolution of ASEAN and subsquentlly the motive of cooperation from both of them are the major point to be analyzed. Last but certainly not least, whether the Neo-functionalism can be applied to explore the case of the PRC-ASEAN free trade area, will be comprehensively analyzed.