The　prevalence　and　importance　of　e-commerce　are　drawing　more　and　more　attention　on　the　research　of　online　consumer　behavior.　Although　there　are　significant　progresses　in　a　variety　of　business　disciplines　focus　on　that　area,　the　studies　appear　relatively　fragmented　and　there　is　not　a　well-developed　model　accepted　by　the　researchers.　In　view　of　this,　this　article　reviews　the　literature　and　past　effort　on　building　a　framework　in　this　area,　tries　to　offer　a　more　comprehensive　and　logical　model　with　four　key　building　blocks　(information,　intention,　adoption　and　evaluation)　that　can　better　guide　the　researches　on　online　consumer　behavior.　©　2010　IEEE.