Abstract: Taking Jiangsu as an example,this paper discusses the purposes and technological features of data updating and integrating in detail.Technological features are:·synthetical use of multi-sources data including SPOT-P and TM multi-spectral fusion image,GPS surveying road data,old 1:50 000 scale topographic maps and so on.·making scientific and advanced criterion according to the study area and the new development of geomatics.·application of 3S technologies to the data updating and integrating.Lastly,the paper discusses not only the source of error in the process of updating and methods of error control but also the feasibility and drawback of updating and integrating ways applied in this paper.