Abstract: The initial development of PC software base for the design of electromagnetic component in accelerator is described in the paper. The developing studies include the transplantation and development of POISSON/SUPERFISH, RELAX 3D, TRANSPORT, RAYTRACE, MAD and PARMELA, and the modification of softwares DE2D, DE3D, CYCCAE and CYCCEN, which are developed in China Institute of Atomic Energy. Some application in the actual engineerings is also introduced.