RESEARCH65CATIACAAC++RADECAACATIACATIA[ABSTRACT]ToolscustomizedforCATIA,sec-ondarydevelopmentofCATIAbasedonCAAandRADEisbrieflyintroduced.BysecondarydevelopmentofCATIAbasedonCAA,traverseofproductstructuretree,father-childassemblyrelationshipandextractionofattributein-formationarerealized.Keywords:CATIACOMSecondarydevelop-mentBriefAnalysisonSecondaryDevelopmentofCATIABasedonCAADOI:10.16080/j.issn1671-833x.2012.10.014RESEARCH66RESEARCH67-RESEARCH68