Because of the limitation of the model and mesh in the FEA software, the method of the node leading-in was proposed. The layout figure was founded with the 3-D modeling software and the coordinate data were extracted, at the same time the data were imported into the FEA software. The FEA model and the mesh were also generated based on the imported data in the FEA software. This modeling method was used successfully in the FEA and the structure optimization of the vibrating screen. The calculation result showed that this modeling method made the calculation and memory simple and provided the reference for the designer.