Abstract: The effect of creating blog-based portfolios on knowledge management (KM) abilities among university students was examined in the present study. Participants included 43 students majoring in Multimedia and Game Science at a University in Taiwan. Students spent nine weeks creating their personal portfolios by using a blog. The t-test was conducted to examine the difference in KM abilities before and after creating blog-based portfolios. The results showed that students' KM abilities after creating blog-based portfolios were significantly better than before creating blog-based portfolios.