Promoting the systematization and academization of theories is an inherent requirement and an important way to promote the innovative development of national security theory， holding significant importance for its evolution. As an important theoretical achievement in promoting the systematization and academization of national security theory in the new era， the holistic approach to national security is rich in its content and profound in its meaning. Among them， the "great security" concept provides a holistic perspective for it， which is centrally manifested in its alignment with the expansion of national security domains， the diversification of subjects， and the coordination and harmonization of its rationale. The "two combinations" constitute the fundamental pathways for advancing the systematization and academization of national security theory， offering strategic choices for better grasping the basic laws of national security and for constructing an independent knowledge system of national security.