In order to improve the electric machinery collaborative design function of the motor Industry Internet Cloud Platform of SEARI, a two-dimensional electromagnetic field simulation software based on finite element method is developed to realize the simulation calculation of motor electromagnetic field. In the mesh generation part of the software preprocessing, triangular meshing is adopted. Through the summary and research of existing mesh algorithms, a two-dimensional mesh design method suitable for motor electromagnetic field simulation is proposed. It has the characteristics of strong meshing adaptability and fast calculation speed. The meshing method of the motor electromagnetic field calculation introduced has been applied to the software development of “EMFTest V1.0”, which verifies its feasibility.