The　heater　configuration　and　the　convective　behavior　of　silicon　melt　in　the　vacuum　induction　melting　furnace　used　for　preparing　solar-grade　casting　quasi-single　crystal　silicon　was　analyzed　by　the　commercial　CG-Sim　software.　The　results　show　that　the　electromagnetic　force　is　one　of　the　driving　forces　to　convection.　Meanwhile,　both　strength　and　distribution　of　the　electromagnetic　force　are　influenced　strongly　by　the　ratio　of　induction　coil　height　to　melt　depth　(defined　to　k).　As　k　value　is　1.2,　melt　convection　develops　from　two　vortexes　to　one　dominating　vortex,　which　is　benefit　to　the　impurities　evaporation.　At　the　same　time,　for　the　inductive　frequency　within　the　range　from　3000　Hz　to　5000　Hz,　the　flow　strength　decreases　which　can　increase　the　thickness　of　boundary　layer　between　silicon　melt　and　silica　crucible,　resulting　in　the　deceasing　of　oxygen　concentration　in　silicon　melt.　©,　2015,　Chinese　Ceramic　Society.　All　right　reserved.