The invention relates to a safe turning-of system and method for a vehicle electric motor torque. The system includes two turning-off paths and a single-chip microprocessor abnormity detecting part. The single-chip microprocessor abnormity detecting part is used for detecting abnormal state of a single-chip microprocessor and outputting corresponding safety state control information according to adetection result. The first turning-off path and the second turning-off path are used for executing vehicle electric motor torque turning-off control. Besides, the first turning-off path and the second turning-off path are controlled by the single-chip microprocessor when the single-chip microprocessor works normally and is controlled by the single-chip microprocessor abnormity detecting part when the single-chip microprocessor meets abnormity. By adopting the system and method provided by the invention, since the single-chip microprocessor abnormity detecting part is adopted, influence on aturning-off part when the single-chip microprocessor works normally by safety state control information is avoided through a logic gate circuit and the highest turning-off control priority when the single-chip microprocessor meets abnormity is achieved. Therefore, safe and reliable vehicle electric motor torque turning-off can be realized with a simple principle and an excellent effect.