The purpose of 3D model library construction was to realize standardization organization and efficient, centralized management of mass 3D CAD models resource of components and parts. Based on heterogeneous CAD platforms, the system architecture for webbased and parameterized 3D CAD model library was built. And three key technologies were discussed, including OSGbased 3D model network visualization, 3D model parametric drive design, unified encapsulation of secondary development interfaces , and the encryption of 3D CAD model and its parameters. A prototype system was developed and its application process was given for complex product (e.g. energy saving pumping unit) rapid virtual prototype design. The results show that the developed Webbased and parameterized 3D CAD model library on heterogeneous CAD platforms can not only meet the demand of different CAD user, but also support online browsing and parametric drive design of 3D model parametric 3D model driven design, and improve the efficiency of product development.