This study investigates whether easy understanding of user interface could affect the use of electronic materials in a virtual academic library. The user interface of Duksung Women's University Library was analysed in terms of label description and array of menus. The frequencies of menu use were collected by analysis of use log files after modified user interface was applied. Clear label descriptions of link menus and sub-menus of electronic material searches significantly contributed to the increase of number of user clicks on the modified menus. This study reveals that the more clearly menu labels are described, the more frequently users click the menus on the academic library user interface.