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Aiming at the slip problem of rail vehicle which often appears when train running, nonsingular terminal sliding-modes are used for rail vehicles. Based on the mathematical equations of permanent magnet synchronous motor, established the vector control model. referred to the nonsingular terminal sliding-mode control strategy and imitated the response to the slip problems. The simulink model was founded by Matlab. The results show that, the output torque can reach the given values in a shorter period of time than that of a traditional PID control strategy, which controled by nonsingular terminal sliding mode. And system is robust with respect to the disturbances. Rail vehicle can reach stable operation region more faster and stable in the case of slipping.