With the proposal of the goals of carbon peaking and carbon neutrality during the 14th Five Year Plan period, prefabricated decoration has been rapidly promoted due to its characteristics of low carbon, energy conservation, and environmental protection. BIM technology, as an important tool for the integration of construction industrialization and informatization, has become an indispensable part of the development cycle of the entire construction industry. However, its application in prefabricated decoration projects is still in the exploratory stage. Therefore, in order to solve the problem of hindered application of BIM technology in the field of prefabricated decoration, this article utilizes BIM technology and web technology, combined with the modular development trend of prefabricated decoration components and the current application status of BIM technology in the field of prefabricated decoration. Based on Visual Studio 2019, a management system suitable for prefabricated decoration families and modules is developed. The architecture of the prefabricated decoration component library management system is proposed to break down the barriers of information sharing. To improve the utilization rate of modules, modules and family files can be directly downloaded and arranged to improve modeling efficiency. This system provides reference for the standardized management of prefabricated decoration component libraries and promotes the further development of BIM technology in the field of prefabricated decoration.