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For a hypersonic flight vehicle’s trajectory tracking control problem, backstepping sliding tracking controller using backstepping approach and sliding mode control theory together is designed based on longitudinal input/output linearization model. This kind of controller has strong robustness whether encountering matched or unmatched uncertainties and shows quicker rapidity of convergence. The research optimizes and gets the controllers parameters of backstepping sliding controller and general sliding mode controller, then comparatively studies the speedability and robustness of the two controllers with velocity tracking instruction, altitude tracking instruction, velocity and altitude tracking instruction and sine-wave velocity tracking instruction. The simulation results demonstrate the method in this paper is reasonable and efficient.