This study investigates the infuence of three force loading methods on the prediction accuracy of electromagnetic vibration and noise in electric motors with diferent pole/slot combinations. The calculation approach of diferent electromagnetic force loading methods is frstly deduced and analyzed. Then, a multi-physics model for vibration and noise prediction is established and validated with a noise test. Finally, electric motors with three pole/slot combinations are selected, and the electromagnetic noise predicted by diferent force loading methods is compared. The results show that distributed force loading method of the electromagnetic force leads to a more accurate solution to the acoustic noise, even if the concentrated force considers the equivalent force couple produced by the translation of the nodal force action point. This study can provide guidance for the design of low-noise electric motors.