Interior Permanent Magnet Synchronous Motor (IPMSM) adopting vector control method has decoupling complexity and difficulty of additional optimization goal integrated into system control, IPMSM torque predictive control method based on Maximum Torque per Current (MTPA) is proposed. On the basis of deducing MTPA principle, torque predictive control principle and performance index function are analyzed. 22 kW IPMSM prototype simulation and experimental results show that the system has good static and dynamic performance under load variation condition in full range of speed. The proposed method has higher stator current utilization rate under heavy load condition, and electric vehicle drive performance and efficiency index requirements are achieved.