Electrorheological　suspensions　performance　based　on　SrTiO3/PANI　electrorheological　particles　under　different　volumes　of　particles,　different　dispersing　medium　(silicon　oil/transformer　oil/castor　oil/liquid-paraffin/chlorination-paraffin)　and　different　additive　are　presented.　These　electrorheologic　regress　analyses　are　obtained　and　the　experimental　results　show　that　the　electrorheological　effect　of　electrorheological　suspensions　of　composing　SrTiO3/PANI　particles　with　castor　oil　is　greater　than　that　of　others　in　their　electrorheological　performance.　The　expressions　of　shear　stress　vs　electric　field　have　been　obtained　in　different　conditions　by　experiments　and　regress　analyses,　which　are　the　theoretical　foundation　for　the　application　of　engineering.