The work aims to propose a sensor-less control strategy of PMSM based on adaptive backstepping and extended Kalman filter, to solve the problem that the existing sensing control depends on the position and speed information acquired by the Hall sensor, and improve the control performance of the packaging line and further reduce the cost. Firstly, the rotor position and speed information estimation algorithm based on adaptive extended Kalman filter was established to obtain more accurate rotor position and speed information. Then, according to the backstepping control principle, the adaptive backstepping controller based on the adaptive extended Kalman filter algorithm was designed to achieve better control performance. Finally, the stability of the designed controller was demonstrated based on the Lyapunov stability criterion. The comparative experimental results showed that the designed controller had faster response speed and better anti-interference ability under the mutation reference speed and mutation load than the PID and sliding mode controllers. The method can effectively improve the dynamic performance and anti-interference ability of permanent magnet synchronous motors and reduce the use of position sensors, so that the improved system operation cost is lower and the packaging can be completed better.