11120065No.111May,2006(,,200030)[],,,[][]G252[]A[]100322797(2006)0320076203[Abstract]Thereareexternalitiesincostsandyieldsofinformationservice,whichmakesthede2mandandsupplyofinformationserviceshowsomespecialties.Inpractice,thedevelopingofmodeofinformationservicewillbeaffectedbytransformingfrominformationscarcitytoattentionscar2city,clustereffectandsubstituteeffect,moreoverandthistrendwillbecontinuinginfuture.[Keywords]EconomicModeofinformationserviceClustereffect(T.D.Wilson):,,,,,,1,,:();;,,:;,[],1974,,;,1978,[1],[2];,;,,,,,,,,[3],,:,67©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[4],1,,,,[5]22.1,,,()();,,,,,,:[6],,;,,12.2,(),[7],,;(),,,,,,[8],2.3,2(),,,,,Q1;,,Q2,,Q1Q3;,77:DiaoJiewenetc.:ResearchonModeofInformationServiceinEconomicView©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(cluster):,,,,,,3.3,,,;,,,,,,3,,,;,,,;,34,,,,,,,,1..(),2003(5)2..,2003(10)3,..,2005(1)4..,2003(3)5..,2004(2)6..,2002(7)7,..,2005(3)8..,2001(6)(:2005211221)8720063©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.