Currently, Reading instruction has a problem that it's separating subject matter and emphasizing only an activities after reading. This study designed a web-based reading instruction system in which teachers, students and teacher librarians can actively participate to help students to develop the integrated reading ability. Existing reading system have been analyzed to find requirement of web-based reading instruction system. Supposed reading instruction system composed of 6 menus, reading guidance ,reading level diagnosis, book selection, reading strategy, reading presentation, reading discussion.