To effectively reduce the noise generated by motor vibrations, the relationship between rotor step with skewing and motor electromagnetic noise is investigated. Based on the ANSYS simulation platform, the radial electromagnetic force and noise of an 8-pole, 48-slot permanent magnet synchronous motor are simulated and analyzed under different numbers of segments. Using Fourier decomposition, the spatiotemporal distribution of the main orders of radial electromagnetic force before and after skewed segmentation, as well as the changes in electromagnetic noise under different segmentation conditions, is obtained. The impact of rotor step with skewing on motor vibration noise is analyzed. The simulation results show that when the motor adopts rotor step with skewing, there is a significant improvement in the radial electromagnetic force and noise generated during vibration compared to a motor without rotor segmentation. Furthermore, as the steps increase, the suppressive effect of the skewed segments on motor vibration noise becomes more pronounced.