本文提出「功能詞」的概念,並配合中文詞知識庫「知網」,建置一軟體搜尋系 統,讓使用者能以隨意句子搜尋其所需之軟體。根據實驗的結果,「功能詞」概 念確實能有效的提升查詢的準確率。 This paper proposes a concept of function terms, with a common-sense knowledge base-"Hownet", to implement a software retrieval system where users can retrieve the software they need by free text. The concept of function terms can actually promote the accuracy according to the result of our experiment.