As the crown of social sciences, the discipline construction of economics is of great significance to China's "double first-class" construction, especially the world first-class discipline construction, and also provides important reality guidance for comprehensively deepening the reform in China to achieve the modernization of state governance. This paper firstly analyzes the matching of the world first-class economics discipline construction with the "double first-class" strategy orientation, then explores the difficulties and breakthroughs China's world first-class economics discipline construction suffers, and elaborates China's contribution to economics development and innovation. It argues that China's world first-class economics discipline construction needs to conduct the evaluation in accordance with academic standards of international counterparts, and research issues including China should be the concern of international counterparts, so it needs to improve the evaluation system of the discipline classification, strengthen the original research and gather high-level talents to make a breakthrough. Meanwhile, aiming at the development and innovation of economics in China, it points out that there are three directions in which China's economics academia can and should make great contributions, namely the exploration of historical endowments and modern value of China's traditional economic thought, the innovation of original theoretical and methodology research and theoretical abstraction & sublimation based on the practice of China's economic reform development.