Abstract: The purpose of this research is to propose a learning portfolio framework called blogfolio on the basis of blog. A portfolio has been used as an approach to record student learning progress and assess student learning performance in the education system for a long time. A blog is a kind of social computing in which a virtual community may be formed to perform certain activities. In terms of content collection and maintenance style, portfolio and blog have a certain degree of similarity. In this research, some types of portfolio definitions are discussed and the blogfolio is on the basis of Barrett’s description which takes collecting, selecting, reflecting, projecting and respecting as the activities of a portfolio. The blogfolio not only keeps all the functions a traditional portfolio should have, but also incorporates the features and advances of blog services such as publicity, cross link and syndication that make it a more suitable and convenient platform to let students build their portfolio. The proposed framework is described in detail, an experiment was conducted to understand the system usability and a comparison was made to investigate the advantages and disadvantages between different implementations of a portfolio. We conclude that some modifications should be made on typical blog to fit the requirement of a portfolio. In addition, blogfolio is superior to traditional portfolio in easy to use, publicity and collaborative learning but lack of authentication.