Abstract: Combing the advantages of glide trajectory and cruise trajectory, we design a novel hypersonic glide-cruise trajectory. Firstly, aiming to increase the range and the transverse maneuvering capability, we design the hypersonic glide-cruise trajectory based on the Gauss pseudo-spectral method, then a high-precision steady-state cruise design method is implemented using feedback linearization in conjugation with sliding mode theory. The similation results indicate the trajectory converges to the optimal solution, validating the feasibility of the design method.