As the globalization trend going on, the Taiwan¡¦s steel import tariff has been reduced to almost nil customs duties after joining in the World Trade Organization. Taken to be a result of continuous investment in enhancing and enlarging output capabilities made by local steel manufacturers, the domestic steel markets are showing a tendency to a surplus status of supply over demand. The steel companies in Taiwan are faced with much stricter economic surrounding. Therefore, it is first priority that any enterprise must do well on internal improvement in order to keep its competitiveness. This research aims to setup Architecture-Oriented Production Equipment Management Model (AOPEMM). The results will be provided to the coated/galvanized plate steel products as reference of the Production Equipment Management. In this research, we first set up the roadmap of Architecture-Oriented Production Equipment Management Model. In the roadmap of AOPEMM, structure element diagrams, structure element service diagrams, structure behavior coalescence diagrams, and sequence diagrams are constructed accordingly. Through repeating of this construction, we then achieve an optimization of the AOPEMM. We compare AOPEMM with Non-Architecture-Oriented Production Equipment Management Model (NAOPEMM) using six measurement indicators, such as organization, personnel, task, technology, communication interface and integration of the resources. Strength of AOPEMM and Weakness of NAOPEMM are validated to support the argument of this research.