Abstract: In order to optimize the performance of induction motor control system, a new speed control strategy based on fractional order non-singular terminal sliding mode control is proposed. Firstly, a hyperlocal model considering motor parameter perturbation and external disturbance is established. Then a fraction-order non-singular terminal sliding mode controller is designed based on the fraction-order theory and sliding mode control, which can improve the dynamic response speed of the system and effectively suppress sliding mode chattering. In addition, the controller adopts a non-cascade control structure instead of the traditional speed loop and current loop control, which simplifies the controller structure. Then the nonlinear disturbance observer is used to estimate the unknown disturbance of the system, and the stability of the system is proved by Lyapunov’s theorem. Finally, the experimental comparison with the traditional control method shows that the proposed control method can effectively improve the dynamic performance of the system, and has better anti-interference ability and steady-state accuracy.