Abstract: Maximum torque per ampere (MTPA) control of interior permanent magnet synchronous motor (IPMSM) can fully utilize the reluctance torque, minimize the armature current and improve the operating efficiency, which has been an important motor deriving technology. In practical application, the parameter uncertainties cause deviation of the optimal analytical solution of the MTPA problem. Therefore, it is significant to boost the robustness and practicability of the MTPA method. A Majority of MTPA control strategies considering parameter uncertainties were reviewed and compared in this paper. Then, the key technique and research achievement of different methods were summarized. Next, the kernel theory of high-frequency signal injection was illustrated and described, and the performance advantages and application limitations of other methods proceeded from high-frequency signal injection technique were discussed. An improvement method to fulfill MTPA trajectory tracking was proposed and explained briefly. Finally, the significant issues and development toward MTPA control considering parameter uncertainties in IPMSM were analyzed and stated.