The construction of smart cities requires the establishment of a coordinated information infrastructure that integrates data,business,technology,and operations.The data hub serves as a mechanism that continuously transforms data into assets and supports business operations,providing data aggregation,management,processing,and service support for smart cities.It ensures timely and accurate responses to users'data needs,enhance the common capabilities of government services,social governance and other government affairs,supports the interconnection of upper-level government business sectors,fosters innovative data application scenarios,and enables data to generate value and serve urban management,people's livelihoods,and the economy,and efficiently empower the construction of smart cities.