This paper chooses open access (OA) journals, OA books, OA repository and open research data as the four main forms of academic library’s participating in OA publishing. The diversified participation can be performed as: Firstly, academic libraries guide OA publishing, construct and manage OA journal indexing platforms, develop or fund online publishing systems, publish journals directly, and further set or manage a special fund to support the faculties for their article processing charges. Secondly, join in OA books indexing platforms and participate in academic resources coalitions to support and publish OA books. What’s more, make or introduce data policies, develop publishing platforms and data management plan tools to provide digital infrastructures for data publishing and serve for data life cycle management and provide quality control methods during the process. Last but not least, academic libraries participate in OA repository indexing system, repository coalition and institutional repositories to support the development, management and openness for OA repository. Academic libraries involve in open access publishing activities from various aspects, and are changing its role from content publisher to new roles and positions in wider scholarly communication.