Abstract:A knowledge resource sharing platform is constructed under the dynamic network environment. A classified model with step-up layer structure to industrial design knowledge of NC machine is brought forward to realize the rational classification and easy transferring or reusing of knowledge. The design knowledge can be managed availably and applied rationally when the model is used in NC machine manufacturing corporations. The content and structure of the knowledge model can much more particular and perfect along with the cumulation of new resource and the circularly use of the knowledge. This knowledge model has advantages, such as the knowledge can be searched, learned and used in short order, the cycle of product design is shortened,and the efficiency of production is improved.