The analysis of learning behavior and identification of learning style from learning logs are expected to benefit instructors and learners.This study describes methods for processing learning logs,such as data collection,integration,and cleansing,developed in Kyushu University.The research aims to analyze learning behavior and identify students learning style using students learning logs.Students were clustered into four groups using k-means clustering,and features of their learning behavior were analyzed in detail.We found that Digital Backtrack Learning style is better than Digital Sequential Learning style.