This paper describes an envelope protection control system using obstacle-avoidance method for the new generation fighter.Firstly, a dynamic inversion controller is used to stabilize the fighter.Obstacle avoidance boundary protection method is then developed to generate the security envelope of the key flight parameters.The Dynamic Matrix Control (DMC) adjusts its parameters online to modify the control variables of the fighter.The developed dynamic matrix control scheme can guarantee the fighter flying inside the security boundary.Simulations are provided for angle of attack, and the simulation results show that the designed flight control system is effective.