Temperature-drift　limits　the　application　of　optical　current　sensor(OCS),　study　is　now　focused　on　the　analysis　of　the　temperature　characteristics　of　optical　devices　and　there　is　no　enough　research　on　the　variation　of　magnetic　properties　with　temperature.　Magnetic　permeability　and　air　gap　length　are　changed　with　temperature,　it　is　necessary　to　analyze　the　magnetic　properties　coupled　temperature.　The　magnetic　model　including　thermal　effects　and　air　gap　factors　are　proposed　by　incorporating　the　temperature　into　the　original　Jiles-Atherton　model　and　adding　magnetostriction　coefficient　and　thermal　expand　coefficient　to　correct　the　length　of　air　gap.　A　new　design　of　air　gapped　amorphous　core　with　stable　temperature　characteristics　is　proposed　based　on　the　new　model.　The　experiments　on　a　Fe-based　amorphous　core　are　conducted　and　the　results　show　good　agreement　between　the　simulation　and　the　experiment.　©,　2015,　Chinese　Machine　Press.　All　right　reserved.