在数字生态预测和管理技术不断发展及新型信息系统和工业智能的持续推动下，数字孪生理念应运而生。通过对现阶段图书馆运行存在的业务割裂问题进行深入研究，以智慧图书馆业务分解和融合重构为切入点，融合数字孪生理论技术与图书馆业务，构建与智慧图书馆实体空间精准映射和实时交互的数字孪生体，利用敏捷高效的软件架构及高效计算与处理、多尺度动态建模、沉浸式交互等技术，构建智慧图书馆业务融合方案，实现智慧图书馆业务的有机融合和协同创新。

With the continuous development of digital ecological prediction and management technologies and promotion of new information system and industrial intelligence,the concept of Digital Twin emerges. This paper studies the problem of business separation in libraries,takes the business decomposition and reconstruction of intelligent library as the starting point,and combines the theories and technologies of Digital Twin with library business,to build a digital twin which is precisely mapping to and doing real-time interaction to physical space.And to realize organic integration and collaborative innovation of business in intelligent libraries,this paper builds a business convergence solution by using agile and efficient software architecture,and technologies as efficient computing and processing,multi-scale dynamic modeling and immersive interaction.