The　hysteresis　loops　of　ferromagnetic　materials　are　dependent　on　temperature　and　they　will　affect　the　magnetic　characteristics　of　electromagnetic　equipment　at　different　temperatures,　so　it＇s　necessary　to　create　a　temperature　dependent　hysteresis　model.　A　new　model　based　on　Preisach　theory　was　developed　to　study　the　effects　of　temperature　on　magnetic　hysteresis.　The　temperature　was　introduced　into　the　existing　model　by　adding　additional　parameters　such　as　curie　temperature　and　critical　exponent.　The　experiments　on　a　Fe-Si　magnetic　sheet　core　are　conducted　and　the　results　show　good　agreement　between　the　simulation　and　the　experiment.