Aiming at the flexibility requirement of resource organization in the design of distributed avionics system and improving the utilization rate of system resourcesa system management configuration method based on distributed avionics system is proposedwhich introduces functional componentsservice roles component instances and system management agentsand defines component-to-component messages and system configuration information tables.Through the system management strategythe restart of the component instancethe master-slave backup of the component instanceand the cold backup of the component instance are realized,thus increasing the task reliability of the system.The system reconfiguration of distributed avionics system is realized without changing the functions of application components and ICD interface.