Interpretation of the term ecological security in military theory: ecological security refers to the health and integrity of the ecosystem. The protection degree of human beings from ecological destruction and environmental pollution in production, life and health includes basic elements such as drinking water and food safety, air quality and green environment. A healthy ecosystem is stable and sustainable, which can maintain its organizational structure and autonomy in time and its resilience to stress. On the contrary, an unhealthy ecosystem is an ecosystem with incomplete or abnormal functions, and its security situation is threatened.