Relying on cheap labor cost advantage, China is locked in the low-end processing link of the global value chain and obtains a lower profit share. With the deepening of the international division of labor, changes in the distribution of national interests and the spread of anti-globalization in some developed countries, the global value chain is undergoing a new round of large-scale reconstruction and emerging economies are trying to penetrate and extend to the high end of the global value chain. Based on the theory of industrial upgrading and global value chain, this paper focuses on the current development of Chinese apparel industry, the mechanism, development and problems of global value chain reconstruction, analyzes the relevant elements in the apparel industry value chain reconstruction, and proposes the application of data envelopment analysis ( DEA ) competitiveness model in the value chain reconstruction of apparel enterprises. We use the CCR ( C2R ) model to simulate the improvement of production efficiency. Finally, we put forward corresponding countermeasures and suggestions for the value chain reconstruction from the perspective of improving product competitiveness.