Abstract: The newly revised National Defense Education Law incorporates psychological education into the framework of national defense education, representing a significant theoretical advancement in China’s approach to national defense education. Conducting research on fundamental issues such as the conceptual definition, key components, educational content, and influencing factors of defense psychology is conducive to deepening the theoretical framework of defense psychology and providing theoretical support for strengthening national defense education for all citizens in the new era.The study aims to deepen the theoretical construction of defense psychology and provide a theoretical basis for enhancing national defense education for all citizens in the new era.