隨著網際網路的日漸普及，上網查詢資訊已成為許多使用者的重要管道，而瞭解這些網路使用者的資訊行為七成為各項研究的重用基礎。本研究的目的即是希望藉由分析臺灣地區網路使用者的查詢語彙記錄，瞭解網路使用者的資訊需求，並分析臺灣網路使用者的特性，以提供圖書館資訊服務的參考，同時也可提供新一代網路資訊檢索技術的參考。研究方法主要以夢想家（ Dreamer ）搜尋引擎所提供的大量查詢語彙記錄檔案， 進行包括基本資料分析、查詢語彙頻率分析、及查詢語彙類別分析等。基於網路使用行為的研究在國外已受到相當重視，而國內目前缺乏以圖書資訊學專業對網路使用行為作大規模且深入調查研究，本研究結果對瞭解網路使用者的資訊行為頗具意義。

　　　　　As the Internet becomes a major source of information for an increasing number of network users, we need to know more about the information behavior of these users. The aim of this research is to investigate the information needs of network users in Taiwan via analysis of search terms logs. This paper reports the results from a major study exploring users' query terms provided by Dreamer search engine including nearly 230 thousand search terms and corresponding frequencies. The study includes analysis of search term usage, categorization of highfrequency search terms, and evaluation of information needs of each category etc. Detailed results are valuable for the studies of network users' information behavior, and for various applications such as improvement of library and information services, and development of advanced network information retrieval technologies etc. As more and more attention has been on related research, and meanwhile the localization of such research is important, this paper provides some essential findings for further research.