According to Article 4. 1.3 of Code for Design of Library Buildings (JGJG38-2015), with the change of management mode and the continuous improvement and modernization of service means, all kinds of libraries have greater flexibility and adaptability to the requirements of library building space to meet the needs of functional adjustment and change. With the gradual expansion of open-shelf management, there are more and more comprehensive spaces that require the integration of storage and reading, and the so-called "three unifications" have emerged. Therefore, when determining the column network, height and load of library reading space, we need to consider more flexibility, comprehensively analyze and carefully determine it. For spaces with relatively stable functions, such as offices, conference rooms, internal business rooms, etc., the size and height of the column network should be determined according to the actual use requirements, and the load should be selected according to the provisions in the Code for Structural Loads.