Abstract: This paper deals with the application of advanced multivariable control technologies to integrated flight and propulsion control systems.Focusing on the coupled flight and propulsion subsystems,the integrated flight and propulsion model was established.The approach which translates the multivariable feedback control problem of integrated flight and propulsion system with multiplicative output perturbation and tracking error performance uncertainty into mixed weighted sensitivity function shaping problem was analyzed.The methodology of selecting weighted sensitivity function based on the Integral of Time multiplied by Absolute Error (ITAE) rule is presented and applied to the design of the integrated flight and propulsion control system model.The optimum control system so obtained is verified by simulation.