將設計模式引入網管系統可以減少管理系統設計的復雜度，提高系統的開發效率。在分析設計模式中的Singleton模式、Adapter模式、Observer模式的基礎上，討論了體系結構，以及為設計模式如何實現網管系統功能做出了理論指導。通過分析證明在網管系統中運用設計模式是提高系統質量的有效途徑。
關 鍵 詞 設計模式; 網元管理系統; 單子模式; 適配器模式; 觀察者模式

Abstract The using of design patterns in EMS system can decrease the complexity and improve the efficiency of system development. By analyzing Singleton pattern, Adapter pattern, Observer patter, the paper discussed their architectures in detail. In advanced, it can provide a theoretical guide to realize system functions with these patterns. In the end, it analyzed why and how to use these patterns to EMS system. The application of design pattern in EMS has been proved to be an efficient way to enhance the quality of EMS.
Key words design-pattern; element-management-system; singleton; adapter; observer