The strategy ofthe Digital Earth While it could be athoughtforglobalstrategy

itcould also bea sword of Damocles

foritnotonlyinvolves knowl edge property

international collaboration

data sharing and so on

itservesinternationaltrade

economic development

remote education as well.Additionally

it hasinfluence on nationalsecurity

governmentalrights and ethnic dignity. （2） The basic policy of China For developing countries

the Digital Earth Strategyis more like a challengethan an opportunity. While China in sistsits opening policy

italso needsto enhanceits ability to compete in a global context

formingits own independent andintegrativeframeworkin data acquisition

updating

storing

circulation and mining .There exitneedsto distinguish the domestic needs from international exchange

and national informationalization from countermeasures to the Digital Earthstrategy.Theseshould be no mixtureofconceptsandidenticalactions.Chinathrowsspecialattention onthe Digital Earth strategy forthe world peace and Regionalsustainable. （3） The starting pointin science and technology Since countries are notstarting atthesome place

China mustrely on its advantage and avoid itsinferior positionin developing science and technology to take the master point.In the Agenda 21st

Chinese government introduced more than 40 projectsinvolvinginformation systems;and Chinesescientistsalsoforesaw the digitaltrendin geo science andits prospectsin servingthe society

therefore have been taken partin much cooperation in globalresearches context. In 21st century

the Digital Earth strategy should not bethe arms of hegemony

instead itshouldimprovethe pros perity of human society in following areas;（1）specialization ofsmallsatellite;（2） database update through satellite in formation and data sharing;（3） contentofchlorophylland assessmentofprimary productivity ;（4） thermalfield ofearth surface and monitoring on radio temperature;（5） spectral difference of geo chemicallandscape.Itcan help solve some environmentalproblems brought by the global change

and help reallocate resources in achieving sustainable develop ment.