Abstract: In order to address the architecture of air defense and antimissile kill web, the operational concept, challenges and capability requirements of the air defense and antimissile kill web architecture are analyzed in detail. Based on the idea of "software-defined warfare" and future distributed needs, an architecture of "software-defined + distributed military cloud brain" is proposed. Its capability generation mechanism is explored, operational processes are specified, and technical approaches are clarified, aiming to provide a reference for the development of air defense and antimissile systems.