The analysis of throwing power is one of the key techniques in coating simultaneous engineering(SE).The simulation software is used to set up different electrophoresis structure for special Automobile components,and compare the calculations.The effect of electrophoresis hole size,number and arrangement form for throwing power is summarized.The simulation results is summarized on standards and requirements from the view of coating SE analysis,and provided some reference and suggestion on the electrophoresis hole setting and coating SE analyzing for new models.