| Geospatial information can be divided into basic geospatial information and social theme information. These different kinds of information lie on different grids having no unitive fundus flatform, so we have difficult to integrate all kinds of information. At the same time, the development of social need to eliminate insular information, and need to integrate all the information of geography, resource, entironment, population, economy, society and so on, so it can offer general information and serving for decision-makers and governors. Otherwise, because of the localization of the organizing mode of spatial data and the mode of data expression, the level of automatization and speed is limited when we do geospatial analysis, so we need a new mode of data express which can solve the difficulty.In order to solve above problems, this paper put forwards the thought of geospatial information gird, the grids can be regarded as spatial fundus platform to integrate all kinds of information, and it can offer a new way to do spatial analysis. The contents of the paper as follows:1 .The paper analyzes the localization of the organizing mode of geospatial data, and the difficulty to do spatial analysis under the expression mode of data which extrudes characters of entities;2.The paper puts forwards the conception of geospatial information grid, and summarizes some kinds of methods of geospatial division by grids;3.The paper introduces the principle and building methods of some kinds of grid, and discusses the method of building, coding and application of grid as spatial fundus, this paper emphasizes the study of the integration of information and the application of grid;Finally, the paper introduces the conception of dilation and erosion, and puts forward the information extraction and spatial analysis method of point, region and line based on spatial fundus grid, and do line and point spatial analysis in experiment area which validates the validity and feasibility of geospatial information grid.
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