「永續」是現今熱烈討論的議题，尤其在企業間極爲熱門，突顯了永續發展理念已逐漸深植於企業經營與産品開發上。科技發展與産業革命，除带給人類高度的物質享受外，也爲地球生熊環境與自然資源带来空前的浩劫。在歐盟環保指令相繼出爐，「减量、回收、再利用」提高資源使用效率，已然成爲新的生活方式。「産品服務化系統」即藉由一套完整的産品及服務過程来满足消费者的需求，如此可减少産品的總生産量，並提高資源使用效能，促使物質使用形成一個封閉的資源再利用？。産品服務化概念具有低環境衝擊的特性，因此本研究将其概念導入於永續設計開發策略模式之中，並運用分析網路程序法，探討産品服務化系統提供服務種類與産品生命週期架構之權重排序，作爲産品永續設計開發研究之基礎。進一步，透過修正式德爾菲法應用，分析出産品服務化系統應用於城市自行車之永續設計開發准則，並擬定其永續設計開發評量準則與檢核表，以確保産品永續設計開發目標之達成。最後整合與建構出産品服務化系統永續設計開發策略之應用架構模式，透過産品服務化系統永續設計開發可以改善産品生命週期各階段對環境的影響，提供企業開發綠色産1永續設計参考準則，同時使連續的流動性服務創造出一個利潤更高、風险更少經營機制。

"Sustainability" is a popular and hot topic today. This idea is apparently reflected in corporate management and product development. Technology development and industrial revolution not only provide human beings luxury living quality but also causes global environmental problems and natural resources crisis on earth. Therefore, quite a few environmental protection policies in the world have been made. "Reduce, reuse and recycle" definitely becomes a new life trend. Under this concept, Product Service System (PSS) is a new way to satisfy the customers' needs by means of a complete process in products and services. It can snake resource usage become a closed loop, thus reducing total product quantity and enhancing resource usage sufficiency. PSS has a characteristic of lower environmental impacts. Therefore, the author incorporates the concept of PSS into sustainable product design strategy. This study first utilizes Analytic Network Process (ANP) to analyze both service categories from PSS and ranking priority of life cycle structure to be the foundation of sustainable product design. Secondly, this study adopts Modified Delphi (MD) method to inspect the sustainable design principles for the application of PSS on city bikes. Furthermore, the author develops evaluation guidance and cheek list to make sure the target achievement of product sustainable design. Finally, this research accomplishes an applied strategic structure of PSS' s product sustainable design. By employing PSS on sustainable product design, the study improves the impact of product life cycle on environmental quality. As a result, this study provides the PSS's design principles of sustainable products for corporations, and supplies a continuous service to create an operation mechanism with higher profit and lower risk as well.