The electromagnetic construction of the HSST-03 Maglev train in Japan is simply introduced，the fundamental throries and the analysis method are used in this paper. The detailed derivatrion for the main formations of designing the electromagnets has been carried out (such as the calculation of the static magnetic forces and the sizes of the excited coils，etc). The analysis for selecting the main parameters (airgap flux density，electromagnetic length，airgap's length，etc) is also carried out. Based on a11 this，the method and steps for designing the electromagnets of the Maglev train are given. Besides,the curves of the calculation and testing for the 750 kg electromagnets which have been designed with the designing method and steps are given in it.