According to the current research on 3D model, the paper analyzes the modeling approach, and proposes an electronic component modeling method based on UG, Mentor, Teamcenter8 Parameter modeling approach is selected in this design.The development of interface technology can facilitate the parameter transfer and realize the whole fast driving.3D model assembly design methods based on middleware interface are selected.Associations between parts can be quickly established in this way and requirements of the overall coordination can be taken into account.At last, the versatility and design efficiency of the electronic component 3D model assembly design can be improved to a certain extent.Instances show that this design method can take full advantage of the resources of the existing products, having good versatility and flexibility.