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Based on the collaborative Association and interaction rules of information system, using XML (Extensible Markup Language) technology, the related attributes and interactive information of subsystems and equipment in the information system are modeled and described hierarchically, and the real-time condition monitoring model of the system is established. Through multi-threaded parallel processing technology, collect data in real time and match the system status monitoring model to realize the real-time monitoring of the interaction status, timing logic, working status, compliance, integrity and correctness of data content of the information system, and give abnormal alarms and prompts. At the same time, combined with the fault mode, impact and hazard analysis of the system, This paper gives a preliminary analysis of the impact of current system faults, and the analysis results can be used as a reference for commanders to assist decision-making.