This article takes a deep dive into the pivotal role of large-scale scientific facilities in innovations of human knowledge, focusing on the steady high magnetic field facility (SHMFF) as an example. Significant contributions are investigated including achieving scientific goals, driving knowledge innovations, promoting industrial upgrading, enhancing international cooperation and exchanges, and attracting top-level talents. SHMFF has established a high-field magnet cluster, providing advanced experimental conditions for cutting-edge research in multiple disciplines such as physics, chemistry, materials science, and biology. This enables researchers to conduct a series of high-standard experimental studies and achieve a series of high-level scientific outcomes. Its derived technologies have been widely applied in fields such as high-end equipment manufacturing and pharmaceutical research, effectively promoting regional economic development. Meanwhile, adhering to the concept of open sharing, SHMFF has achieved multiple breakthroughs in the fields of biology and materials through international cooperation, facilitating the exchange and sharing of knowledge. The successful practice of SHMFF demonstrates the pivotal role of large-scale scientific facilities in driving knowledge innovation and offers valuable insights for optimizing the layout of such facilities and enhancing their technological sophistication in China. In the future, the continued construction and improvement of large-scale scientific facilities systems will serve as a crucial strategic foundation for advancing knowledge innovation and scientific progress.