近年來部落格（Blog）的風行與技術的進步，除可作為個人記錄工具，更結合多媒體影音及社交功能。本研究分析臺灣各大免費部落格平臺的功能，從文獻歸納E-Portfolio所需之系統功能。並以「計畫行為理論」為基礎，透過問卷蒐集與焦點訪談等方式，了解臺灣高等教育學生對於使用E-Portfolio系統的需求與動機。研究結果顯示部落格所提供的功能，幾乎支持電子歷程檔案的「蒐集」、「互動」、「應用」建置三階段，證實兩者在系統功能的相關性。此外，可從「行為信念」、「成效評估」、「外部誘因」、「群體影響」等變因來滿足學生在E-Portfolio系統的使用需求。本研究最後提供教師與學生在使用上的相關建議，期待師生能善用部落格著重於互動及分享的特點，並加入第三方網路服務的應用，建置自己的E-portfolio。

Based on the popularization of Blog and the advancement of internet technologies, Blog is not only for posting photos and articles but also support music, video and even social interaction service. The functions Blog supported may be potential to meet what E-Portfolio needs. In this paper, to recognize if we could build E-Portfolio using Blog platform or not, we review the related reference, analyze the main functions of the E-Portfolio system. Moreover, to analyze the needs and motivations of using E-Portfolio, college students participated in this study by the questionnaire and the small group interview based on the theory of planned behavior. The results show the free Blog has the potential to be a platform of E-Portfolio supported by the function of collection, interaction, and application. We could meet students' demands, according to the inner and outer factors from their behavioral beliefs, outcome evaluations and normative beliefs, if we using Blog to build E-Portfolio. This paper also describes a guideline and makes recommendation of how to use Blog for E-Portfolio.