The information system can’t communicate well and heterogeneous problem of areas knowledge expression in semantic and grammar of large manufacturing services enterprise have been researched. This paper discusses the features of system should be built, analysis of defects of the current enterprise application integration. Based on this, by divide the A enterprise equipments knowledge into data layer, basic model layer, static knowledge layer, danamic knowledge layer, knowledge expression layer, realize the knowledge management level planning. It instroduces the ontology model construction in detail. At last, it establishes a SOA and semantic Web service based system architecture framework. It focuses on the SOA hierarchical structure diagram and the large manufacturing enterprise service management system framework, and describes the main module.