In recent years, global public emergencies have profoundly impacted library service models, operational mechanisms, and professional ethics. Such events have driven the transformation and upgrading of traditional library services, forcing libraries to adapt their working models to new circumstances. This paper explores service innovations and response strategies adopted by libraries during special periods and analyzes how libraries can adapt to and lead the “new normal.” The study argues that libraries need to construct new service systems to enhance their visibility and sustainability in cyberspace. To this end, this paper constructs a “Triangular Management Model” for libraries in the post-emergency era and, based on this model, designs overall strategies and specific measures aimed at continuously improving internal work efficiency and upgrading external service levels to address new challenges and opportunities.