The military industry, as a solid backing for national security, occupies a pivotal position at the national strategic level. It is not only a key force to safeguard national sovereignty, security and development interests, but also an important symbol of national comprehensive strength. From aerospace to shipbuilding, from weapons industry to electronic information, the military industry covers a wide range of fields, each of which is closely related to the security and development of the country.

The structure of the military industry chain is complex and fine, and the upstream mainly includes raw materials and electronic components. Among them, new materials as the cornerstone of military products, such as inorganic non-metallic materials with its high temperature resistance, high strength and other characteristics, in the aeronautical engine hot end components and other key parts play a key role; Advanced metal materials such as titanium alloy, with its low density, high strength, corrosion resistance and other advantages, are widely used in aircraft structural parts, engine parts, etc. Organic polymer materials and advanced composite materials show unique properties in aircraft skin, radome and other components. The integrated circuits, sensors, connectors in electronic components, like the nerves and blood vessels of the human body, realize the transmission, processing and control of military equipment signals. The middle reaches are mainly subsystems and supporting equipment. Communication equipment ensures real-time transmission of military information, radar is used for target detection and tracking, and infrared equipment plays an important role at night or in complex environments. The downstream is mainly responsible for the design and assembly of military products, they will integrate various parts and sub-systems, and eventually create complete weapons and equipment, such as fighters, ships, missiles and so on.

The changing international situation is an important external driving force for the development of the military industry. In recent years, the global local conflicts, the Russia-Ukraine conflict, the Palestinian-Israeli conflict and other geopolitical hotspot events, make countries attach unprecedented importance to national defense and security, and have increased military investment and expanded armaments. In this environment, the world's major military powers such as the United States, Russia, China, etc., are actively adjusting their military strategies, increasing investment in the military industry, and promoting the innovation and upgrading of military technology. Through a series of national defense strategy adjustments, the United States has continuously increased its investment in the military industry and maintained its leading position in the field of military science and technology. Under the pressure of NATO's eastward expansion, Russia has accelerated the transformation of its military industry and upgraded its weapons and equipment.
National defense strategy is the internal guideline for the development of military industry. China has clearly put forward the grand blueprint of realizing the centennial goal of the founding of the army by 2027 and basically realizing the modernization of national defense and the army by 2035. Under the guidance of this strategic goal, the development direction of the military industry is more clear, that is, towards information, intelligent, unmanned direction. In order to achieve this goal, China continues to increase the national defense budget, constantly strengthen the national defense science and technology and industrial infrastructure, and promote technological innovation and industrial upgrading of the military industry. At the same time, actively promote the military-civilian integration policy, encourage private enterprises to participate in the military industry, and inject new vitality into the military industry.