圖書館部落格是協助拓展圖書館事業的工具之一,本研究以42所大學院校圖書館建置的71個圖書館相關部落格,作為本研究之對象,利用主成分分析與集群分析來了解其主要的特徵和影響因素。並進行分群觀察出各群組間之特色。最後歸納出以下結論: 一、部落格系統大部分選擇自行建置 二、大學圖書館部落格以館藏選介為主 三、長期經營的部落格有較高的瀏覽量和知名度 四、大學圖書館部落格大致可分為三至四個集群 五、大學圖書館部落格仍在成長與轉變 Library blog is one of the tools to help library development. In order to understand the main characteristics and influencing factors of blogs, there are 71 library-related blogs build by 42 university libraries surveyed. Applies principal component and cluster analysis methods and have the following conclusions: 1.University Libraries almost build the blog by themselves. 2.The subject of university Library blogs usually is about the selected collections. 3.Long-term operation of blog has high traffic and visibility. 4.University Library blog can be divided into 3 to4 clusters. 5.University Library blog is still growing and changing.