Effective product data management (PDM) platform is the critical environment to enhance the competitiveness of
enterprises. In order to quickly establish a customer specified PDM platform for manufacturing enterprises, the
guidance of effective methods is needed. This paper proposed a function analysis model based on granular computing
to guide the establishment of PDM platform. This function analysis model can describe the dynamic mapping design
process and the solution of design problem should be obtained through this process. To illuminate this model, a
practical example of PDM in a company of auto parts manufacturing is provided.