Abstract—As the emergence of the Net-Centric Warfare (NCW), the military information system has been evolved from platform-centric to be net-centric, which brings great challenges for System of Systems (SoS) engineering in the net centric environment. A major task of system engineering is to build system architecture. Although classical system engineering deals very well with architecting problems for a single system in which user requirements are well defined, it has no good solutions for SoS architecting problems. In this paper, existing architecture development methods are briefly reviewed, and a novel capability-based method (CBM) for architecture design is proposed, which not only enables SoS architecting with the new kind of capability-based development process, but also ensures consistency to form integrated architectures.