Abstract: In this paper the authors first analyze the requirement and feasibility of the integration of spatial information and mobile communications,then discuss the key technologies of the system integration include the technology of wireless transmission and wireless interlink,the technology of spatial data management,the method of spatial data description and presentation,the client-side programming technology,and the position determining equipment.A three layers architecture is brought forward to integrate the spatial data management and mobile device.Finally,we summarize the application field and market foreground according to the needs of personal,enterprise an d government and enumerate the typical application of the integrated system such as the express logistics system,public information service,intelligent transportation system etc.