Abstract: Aiming at the uncertainty, diversity and complexity faced by complex systems in warfare in the intelligent era, an edge（command and control, C2) architecture based on PREA & OODA is proposed, the core components of the architecture are "center parallel C2" and "edge autonomous C2", and its central "center parallel C2" connects the reality command center and the edge combat system, and the C2 process is dominated by the PREA loop. "Edge Autonomous C2" organizes edge combat units to handle emergencies or tasks, its carrier is the edge combat unit, and the C2 process switches between PRERA and OODA. Edge C2 mode architecture based on PREA & OODA is designed， including concentrated C2 of command and control center, parallel C2 of cloud center and edge autonomous C2， The mode architecture supports the transformation and coexistence of the two roles of edge combat units: action execution and command and control, and can maintain the continuity and stability of running of the global system and strength its adaptability. The mode framework can guide the execution of such new combat concepts as 'multi-domain warfare', 'decision center warfare' and 'Mosaic Warfare', etc. Especially in the key elements--in command and control，Artificial intelligence technology is fused into the architecture design of a new generation of command and information system, unmanned combat unit, autonomous or semi-autonomous system are accessed, the theory and method guidance is provided.