1) Environmental Geographic Information System (EGIS) is a specific subject research domain in geographic information system with its peculiar characteristic.

2) Accordingly, the security issue in thee-government information system (EGIS) becomes more prominent and severe.

3) First, the paper analyses the technology background, research of present condition and hard device condition of the embedded GIS. Then on the base of that, the paper has made the structure of EGIS .

4) In this paper, we introduce the Economic Geographical Information System(EGIS). EGIS is a Large-scale software which can use computer to manage ample resource data and aid decision.

5) By establishing the database of an open-pit mine and its knowledge base about EIA of soot pollution, the author finished the EIA of this mine with the EGIS software presented by this paper.

6) Then the developing trend of environmental information system is discussed, and the multi-database basic theory of EGIS is given.

7) The copolymer manufactured by DMT Copolymerized with BD and EGis belonged to the random copolyester.