A　reasonable　encoding　of　component　parts　of　product　is　the　basis　of　implementing　informationization　for　hoisting　machinery　enterprise.　Aimed　at　the　inefficiency　of　the　current　encoding　system　of　hoisting　machinery,　a　new　encoding　method　with　both　classification-code　and　identification-code　based　PDM　is　presented　in　this　paper.　And　an　encoding　system　based　on　Client/Server　pattern　was　developed.　The　feasibility　and　efficiency　of　this　encoding　system　is　proved　in　the　production.