The purpose of this study is to analyze information needs and information usage of academic information users. This study aims to identify more specific information needs through an analysis of the gap between undergraduate and graduate users. Interviews with 20 users of K and S University were conducted for this study. As the result of this study, we found that the information needs from undergraduate and graduate users are different. The undergraduate users were less satisfied (30%) with information results than the graduate (90%) users and types of their needed information were more diversified. Additionally, the study suggests that information services for undergraduate users should be developed more seriously because their information satisfaction was considerably lower even though they actively utilize information.