This work will design a new smart city data integrated management system based on UE4 engine and C4D modeling tools. Through professional customized development of API interface, it can connect platform data of various departments, realize three-dimensional dynamic interactive visualization of data, and visualize various key data of city operation core system, so as to provide management decision support for areas including emergency command, urban management, public safety, environmental protection, intelligent transportation, infrastructure, etc., and then realize urban intelligent management and operation. The construction of urban comprehensive management and control center is an important transformation of urban management in the era of big data. The visual command and decision-making system is a core platform that can integrate and display information resources, monitor urban operation situation, coordinate and coordinate urban emergency response command, and assist leadership decision-making. The new smart city data integrated management system is mainly oriented to the large-screen visualization environment of various government functional departments. It has excellent big data display performance and multi-machine collaborative management mechanism, and can well support large-screen, multi-screen, super-resolution and other display scenarios. It supports the integration of the data resources of the existing information systems of various departments in the city, covers various business fields, and realizes various functions such as urban operation situation monitoring, construction planning results display, emergency monitoring and command support, etc. with advanced human-computer interaction, which can be widely used in monitoring and command, analysis and judgment, display and report, etc.