Abstract: An approach to classify aircraft typical structural parts and subassemblies into similar groups and construct an open library on heterogeneous CAD software platforms are presented to promote the rapid development of aircraft product with digitized design and manufacturing technology.Object oriented method is applied to analyze and describe the typical parts,parametric modeling and model-view-control （MVC） design mode are used to realize the database design and development.Design process of the database storage mode on OpenBASE and system implement techniques using CAA FOR CATIA V5R13 are outlined.