In order to meet the requirements of high complexity and high safety in the design of redundancy monitoring function of integrated aircraft management system (IVMS), a UML-based modeling method is proposed to realize the requirement analysis of the system function in this paper. Both static model and dynamic model of IVMS redundancy monitoring are built via UML. The static model describes the integrated redundancy monitoring function scene, the running context, the abstract of the complex monitoring object class, and constructs the object activity logic, while the dynamic model describes the state change logic of the redundancy monitoring object in the running scene. Finally, based on the dynamic model, this paper constructs the redundancy monitoring state machine model and implements the function simulation through the SCADE Suit modeling tool.