The construction mechanism of digital library in china includes four mechanisms such as the digital resource onstruction mechanism, service- oriented mechanism, the operating mechanism, management mechanism of digital library. To establish the digital library construction mechanism, which taking resource- building as base point, service pplication as center, administration as means, system specification as the protection, can promote the development of
Chinese digital library from the unity of authority control and management, achieve maximum social and economic benefits  and promote the development of relevant industries.