Abstract: The analysis of the town spatial change underlies the developing trend of the towns. It is very important for directing the far future town planning. It is also the major content and the basic matter in the research on the control of the regional eco-environment evolution. This paper utilizes the RS and GIS technology for studying the spatial changes of the town. Here is the basic flow chart：first, to monitor macroscopically with TM landsatellite data to establish the database of town-space. Secondly, to analyze and evaluate expediently the distribution and the migratory changes of the towns by the function of GIS spatial analysis. Thirdly, after overlaying mult-i period town data, to get hold of diversifications between the different types, and use the matrix of town data of the land changes to realize Spatial analysis. This method is used successfully in the project about studying the distributing status and dynamic changes of townscin Xinjiang. To analyze the change rates and the important degree of the land-types in the past ten years, the results of dynamic changes of the towns have been gotten in Xinjiang. It is accord with the changes between the augment rate of town land-use and the increase of population in Xinjiang and has exerted good effect in relating researches.

Key words: RS, GIS, Town Spatial Change, Database