Aiming at the zero dynamic instability caused by nonminimum phase property of hypersonic vehicles, a model transformation method based on the B-I (Byrnes Isidori, B-I) standard form is proposed to achieve decoupling of internal and external dynamics of the system. A dynamic integral sliding-mode control method was proposed, forming an augmented closed-loop system with external dynamics, internal dynamics and dynamic parameters. A sliding mode parameter tuning method was proposed to make the augmented system remain dynamic stable under different operating conditions and perturbation conditions, and the trimmed point of external output was always zero. The proposed method could accurately track the output trajectory command with zero dynamic stability, and realize the longitudinal trajectory stability tracking control of nonminimum phase hypersonic vehicle. Lyapunov stability analysis was used to prove the stability of the proposed control method, and constant dynamic pressure trajectory tracking and Monte Carlo simulations were carried out. Simulation results show that the DISMC(Dynamic Integral Sliding Mode Control) method maintains good tracking accuracy and robustness under perturbation conditions, and stabilizes the zero dynamics of the system effectively.