This paper proposed an integration development platform of avionics system based on the model-driven method, including model-driven design, simulation, realization, integration and test. Through the applications and verification of the avionics system projects, this platform used the model-driven design to solve the problems of avionics system development, such as the long development cycle, heavy maintenance work, the complicated connection of all the development phases and the no reuse of design results. It could better adapt to the current requirements of avionics systems development.