In order to solve the problems of fuzzy mapping and weak constraints between operational requirements and equipment requirements, a modeling and simulation of operational mission structure was proposed. Based on DoDAF (DoD architecture framework), combined with architecture modeling tools, taking an island capture and control scenario as an example, the operational architecture model is built, the operational elements and their operation strategies are deduced, and the demonstration and verification evaluation are carried out through STK simulation. The results show that the architecture design based on DoDAF can explicitly present the logic of combat system, more clearly describe the requirements in combat scenarios, and provide decision-making reference for subsequent equipment requirements.