近年來，隨著各項環保法規的實施，越來越多企業導入綠色設計於產品開發中，並將產品結合服務，以提供產品功能取代傳統實體產品的銷售，產品服務系統(Product Service System, PSS)即為一種將產品與服務結合的商業模式，不但可減少資源浪費，也可同時兼顧商業利益並滿足消費者的需求。
本研究蒐集目前現有的產品服務案例，以功能分析與TRIZ 法中的物質場模型為主要工具，搭配分析各案例中產品、服務以及環境的特性，進而整理出產品與服務系統的關聯性，以探討目前已知產品所導入的服務方式是否產生缺失，藉由方法流程逐步找出問題所在並得到可獲得改善之創新服務建議，使產品服務系統在設計上具有更大的創新空間。

In recent years, more and more enterprises introduce a concept of eco-design in product development with the implementation of environmental regulations. Products and services are combined in order to provide functions of products and replace traditional product sales. Product-service system, also known as PSS, is a business model combining products and services. In addition, it can not only reduce the waste of resources but balance commercial profits and satisfy the demands of consumers.
This paper collects existing PSS cases and finds out the relation between products and services. The defects existing in current PSS modes within the relation between products and services are discussed. This paper also analyzes the characteristics of products, services and environment. The strategy is mainly based upon functional analysis and substance-field model which is one of the TRIZ tools. By using this method, the designer can identify the problems step by step and get some innovative suggestions. Therefore, the design of PSS may have more innovative possibilities.

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