In this study, the authors chose Daxing County of Beijing as the experimental field in view of its varied landuse styles. Based on analyzing the data-acquisition ways, covering periods, operation conditions, costs, techniques and equipment conditions of some high resolution satellites such as Indian IRS, Korean KOMPSAT-1 and American IKONOS, the authors conducted researches on the feasibility of performing dynamic monitoring of landuse with remotely-sensed data, determined some important technical parameters in high resolution data, analyzed the range of gray level and characteristics of histogram for principal landuse styles, and summarized the spectral characteristics of different types of landuse and land cover. In addition, the spectral characteristics of merged images were analysed, the largest scale of mapping was determined, the monitoring results of different data sources such as IRS and TM, KOMPSAT-1 and TM as well as SPOT and TM were compared, the recognition capacities of different combinations of high resolution data and multi-spectral data were differentiated, the interpretation signatures of land usage dynamic monitoring were established, and some crucial technical problems were solved. A set of operational and practical technical methods and producing procedures have been set up, which serve as great technical supports to national land resources investigation.