The construction of smart city imposes higher demands on urban spatial perception and refined governance. The surveying and mapping geographic information technology

with its high-precision

dynamic and 3D technological advantages

provides strong support capabilities in urban planning management and the construction of intelligent transportation system. This paper investigates key application scenarios of surveying and mapping geographic information in smart cities

analyzes the technical implementation paths in urban data acquisition

information system construction

and data integration mechanism

and explores the intelligent transformation of urban governance systems driven by surveying and mapping data. The research results offer practical solutions for building spatiotemporal information foundation platform in smart cities

holding significant value for engineering practice.