Based on the modern manufacturing models such as virtual enterprise and dynamic alliance, a Process Equipment Service Platform(PESP)with a service - oriented architecture, business process management and semantic Web services is put forward. The structure model of PESP is proposed and such key technology as service granularity, classification, customization and Implement are discussed. The enterprises can benefit with PESP implement by utilizing the resource in the web to shorten the time and reduce the cost of process equipment preparation which is one of the factors that affect enterprises to respond to the market.