Nowadays many statistical geography information systems (SGIS) have been developed with different languages and platforms. The various origin and diverse structure of the statistical resources make users share them and operate these systems mutually difficultly. To solve these problems, we should take into account many aspects, such as operating the database mutually, compatible operating systems and balancing the internet load and so on. While the traditional GIS technology can not solve these problems perfectly, the grid can do it well. Based on OGSA structure, a SGIS model using grid middleware technology is proposed. This paper discusses its infrastructure characteristics and explains how this model solves the problems. Then a specific example is proposed and discussed its implementation process .Considering several key problems needed to be solved in the construction of the system, this paper gives its resolvents. It points out that SGIS based on grid is the best way for digital statistical information.
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