[Objective] In medium- and high-speed domain sensorless control drive systems of permanent magnet synchronous motor (PMSM), the traditional linear extended state observer (LESO) suffers from observation delays in back electromotive force estimation due to bandwidth limitations, which leads to significant errors in rotor position and speed estimation. Aiming at this problem, a PMSM sensorless control strategy based on phase lead correction LESO (PLC-LESO) is proposed. [Methods] Firstly, the design method of the traditional LESO-based sensorless control scheme was introduced, and its inherent observation delay problem in back electromotive force estimation was systematically analyzed using frequency domain analysis. Then, a phase lead correction unit was introduced and the PLC-LESO was designed to observe the back electromotive force. Finally, in order to verify the feasibility and effectiveness of the proposed control strategy, a simulation model was built based on Matlab/Simulink, and the rotor position and speed information was estimated using normalized phase-locked loop to compare and analyze the observation results of the traditional LESO and PLC-LESO. [Results] The simulation results showed that, under identical observer bandwidth setting, the rotor position estimation error of the traditional LESO was 0.6 rad, while the PLC-LESO was able to accurately track the back electromotive force with a rotor position estimation error of only 0.005 rad. When the bandwidth of the traditional LESO was increased to 30 000, its back electromotive force tracking performance was improved, but the fluctuation of the rotational speed estimation was intensified, resulting in resulting in poor system stability. Whereas, the PLC-LESO not only tracked the reverse potential accurately without increasing bandwidth, but also controlled the speed fluctuation within ±10 rpm. [Conclusion] Compared with the traditional LESO, the proposed PLC-LESO exhibits superior control performance in the estimation of the back electromotive force tracking, which improves the accuracy of the system in estimating the rotor position and speed information.