The purpose of this study is to examine the status of Korean library staffs and their role who were alienated as a subjugated class in Japanese Colonial Era and re-evaluate their effort. For these, firstly, this study investigated libraries that Korean librarian worked and the status of Korean staffs. Secondly, examined their position and its role in the library. Lastly, investigated the status of Korean librarians’ participation for training and submission of magazine related to library. As a result, in Japanese Colonial Era, there were totally 241 Korean library staffs in 27 libraries. 73 and 22 librarians each attended the Library Institute and The 29th National Library Conference. And contributors to major library magazins were reached to 40. With this result, it can be evaluated that these library staffs made some parts of efforts making modern libraries in Korea.