A fieldcircuit combined electromagnetic design method for permanent magnet synchronous motor (PMSM) based on ANSYS Maxwell 2D software was presented. Through the analysis and calculation by ANSYS Maxwell 2D software, noload excitation electromotive force (EMF), excitation EMF under load, and daxis and qaxis synchronous reactance of ideal 2D model of PMSM were obtained. These parameters were used to correct the correction coefficients in the electromagnetic design program based on circuit method. The correction coefficients related to noload excitation EMF, excitation EMF under load, and daxis and qaxis synchronous reactance made the design results of PMSM more accurate. The correctness of this design method was verified by test results of a newly designed PMSM.