In order to improve the effectiveness of the safety assessment of civil aircraft during the operational phase, and to address the problem of the lack of a consistent and systematic process for the onging safety assessment of civil aircraft involving users, the DoDAF was used to design and build a system architecture for the onging safety assessment of civil aircraft based on the Unified Modelling Language from multiple perspectives. The DoDAF framework is based on the Unified Modeling Language to design and build an architecture for continuous security assessment of civilian aircraft from multiple perspectives. In order to solve the problem that the architecture model is difficult to analyse, the complex architecture is abstracted into a complex network, and the node importance evaluation index is proposed in conjunction with the analysis of the centrality and robustness of the complex network to analyse and evaluate the architecture. The results indicate that the proposed method can effectively support the design of the architecture for onging safety assessment of civil aircraft and the analysis of its overall performance.