It''''s desirable to implement the network of school libraries based on the department of city or regional education. The digital library supporting center is an integrated information system implemented by the department of city or regional education for supporting school libraries. Busan Metropolitan Department of Education for the first time implemented a digital library supporting center, supported by digital libraries & the digital library supporting center project proceeded by the Department of Education and KERIS. This study at first is to present basic technologies applied in implementing a digital library supporting center and foreign country cases, and then to introduce information system of Busan Metropolitan Department of Education.