Webpage　is　a　foundation　to　electronic　commerce　(EC),　but　webpage　dispute　increase　in　recently,　which　impacts　the　healthy　development　of　EC　seriously;　however,　existing　theoretic　outcome　can＇t　solve　the　problem　effectively.　Therefore,　based　on　analyzing　conflict　between　information　sharing　and　webpage　propriety　in　webpage　of　EC,　the　paper　demonstrates　it　by　conflict　model.　Model　1　indicates　that,　in　two　partners＇　EC,　if　without　any　exterior　restrictions,　rational　EC　webpage　owner　cannot　share　their　proprietary　webpage　information　and　result　in　the　failure　of　EC.　Model　2　shows　that,　as　long　as　mediator　is　introduced　in　EC,　and　the　mediator　is　bestowed　some　rights,　stable　solution　can　be　realized.　Then,　the　paper　demonstrates　the　theoretic　outcome　by　case　study,　which　provides　theoretic　foundation　to　summate　existing　intellectual　property　regime　and　to　make　law　of　EC.　At　last,　the　paper　suggests　future　research.　©　2010　ACADEMY　PUBLISHER.