Abstract: Product Data Management (PDM) and Enterprise Resources Planning (ERP) are the important technical foundations of manufacturing to achieve Computer Integrated Manufacturing System．The integration of the two systems is mainly based on the work flow and bill of materials (BOM)．The former cannot update data real-time because of the restriction of work flow nodes；the latter integrated product structure data only which cannot meet the needs of variant design method based on the diversiform customer requirements．The complete product structure which includes the product configuration information was established based on the generic bill of materials (GBOM)．To accomplish the integration of PDM and ERP,the intermediate files of part (Item) and GBOM were set up for data interchange．The configuration information in the GBOM was transport to the ERP end,at which the production staff can configure product,the response time to market changes was shortened．A case study on RMM3molded case circuit breaker (MCCB) illustrated the effectiveness of the proposed integration method．

Key words: Generic bill of materials,Product data management,Enterprise resource planning,System integration