ANSYS　software　was　used　for　numerical　simulation　of　stone　wool　melt　in　electric　melting　furnace.　Under　stable　voltage　130　V,　stable　melt　height　1　600　mm　and　stable　inlet　and　outlet　state,　the　insertion　depth　of　cathode　electrode　was　changed　to　study　the　temperature　distribution,　flow　field　distribution　and　current　density　distribution　of　the　melting　in　electric　melting　furnace.　The　results　show　that　the　melt　forms　a　high　temperature　zone　between　the　cathode　and　anode　and　around　the　electrode,　The　temperature　decreases　from　anode　to　cathode　and　from　top　to　bottom　on　the　symmetrical　side　of　the　inlet,　while　the　temperature　increases　from　top　to　bottom　on　the　inlet　side.　With　the　increase　of　cathode　insertion　depth,　the　overall　temperature　and　corresponding　current　density　of　the　melt　increase.　The　deeper　the　cathode　insertion　depth　is,　the　greater　the　temperature　rise　of　the　whole　temperature　field　is.　At　the　inlet　side　and　the　outlet　side,　the　melt　forms　a　circulation　due　to　natural　convection,　and　the　self-stirring　and　self-homogenization　of　the　circulation　have　important　technological　significance　for　melt　homogenization.　Changing　the　cathode　insertion　depth　can　improve　the　melt　control　ability　and　improve　the　subsequent　fiber　forming　effect　and　quality.　©　2024　Bulletin　of　the　Chinese　Ceramic　Society　Press.　All　rights　reserved.