Abstract: The great founding spirit of the CPC (Communist Party of China) is a highly concise "spiritual code" and "value form" of the 100-year history of the CPC, which lays the ideological foundation and spiritual background for the inspiring principles of Chinese communists. To grasp the political implications of the spirit, we must adopt a systematic and holistic perspective and insist on the integration of theory and practice. On the one hand, the political construction of the spirit of the CPC has far-reaching significance politically and strategically. It boasts a strong symbolic political meaning, and serves as the source of inspiration for all Chinese communists to realize the reorganization, thus making the inspiring principles of Chinese communists more complete in structure and more robust in its elements. On the other hand, the spirit of the CPC has expanded the theoretical vision and practical dimension of the great project of the CPC's building in the new era, forming a "three-sphere" strategy of strengthening the CPC with sound organizational system, strong institutional constraints and powerful source of inspiration. In addition, it provides a solid political guarantee for the CPC to lead the people to start the new journey of building a modern socialist country.