The usage of decision models has been given attention by decision makers for many years. How to realise public-use and reuse of model, and gain the adequate information not only limited to local departments in the wide enterprise environment is one of the most concerned issues of decision-makers. The idea of multiple-tier framework put forward by distributed system provides a helpful approach to this issue.This paper proposes a practical approach to model manipulation in a distributed decision support system based on network technology and component technology. It implements the separation among the clients, application and data level, accordingly allows the data and model source distributed storage and sharing for multi-departments. The method based on COM+ component technology makes the model distributed in the host computer all over the Internet/Intranet. Consequently, widespread models can be supplied to the client by application servers.