The current-loop is a key subsystem of the magnetic levitation controller on maglev vehicle. Based on the analysis of controlling features of PI and time-optimal current-loop, the paper presents a design of hypo-time-optimal current-loop control system, which has the advantages of fast adjustment, strong anti-disturbance and insensitiveness to system's parameter. Simulation results show that the hypo-time-optimal current loop was as fast as the time-optimal current-loop and had less vibration when noise interfuses into the system. The experiment results indicate that the hypo-time-optimal current-loop can be regulated conveniently, and can also be successfully applied in magnetic levitation control system.