Citation flight simulator has many systems, compared with the real aircraft, the maintenance manual rules are simple,but the maintenance technical requirements are high. According to the existing maintenance manual, it is difficult to accurately judge the fault components, and quickly complete the disassembly and replacement of the fault components. To solve this problem, the Maintenance Simulation Model (MSM) is proposed and established by analyzing the system structure of the flight simulator with awards, and the MSM Model framework is constructed. The three elements of the MSM Model are defined: state, migration and constraint conditions. The various states of maintenance components are defined based on state, the trigger conditions of maintenance implementation are defined based on migration, and the restriction relationship between state and trigger conditions is established based on constraint conditions. The rendering drive and switching of virtual scene of MSM model are also described. Finally, the disassembly of voice control components in the simulation maintenance platform is taken as an example to verify the effectiveness of the simulation maintenance management model.