With the development of multi-sensor fusion technology,terrestrial mobile mapping system( TMMS),as a multi-sensor integration,fast,high efficient non-ground-control surveying technology has recently gained its rapid development and extensive application. Aiming at operation principle and application characteristic,the actual application advantages of TMMS are specifically studied,and the specific application of TMMS in the area of digital city and 3D modeling is also analyzed in detail by example from the aspect of high efficiency of data collection,richness of data results and data precision. With development of city informatization,TMMS technology will play a great role in digital city construction.%随着多传感器融合技术的发展，地面移动测绘系统（ TMMS）作为一种多传感器集成的快速、高效的无地面控制测绘技术，近年来得到了飞速的发展和广泛的应用。针对该系统的工作原理、应用特点等具体研究了TMMS的实际应用优势，并通过实例从其数据采集的快速高效性、数据成果的丰富性及数据精度等方面，针对性地分析了TMMS在数字城市与三维建模中的应用。随着城市信息化的发展，地面移动测绘技术将在数字城市建设中发挥巨大的作用。
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