The　problem　of　secure　operation　system　risk　management　is　difficult　to　evaluate　quantitatively,　a　quantitatively　risk　assessment　model　for　the　operating　system　is　proposed　in　this　paper.　Through　introducing　the　risk　matrix,　putting　the　information　safety　risk　assessment　as　the　risk　evaluation　model　by　experts　matrix.　Borda　rule　and　AHP　(Analytic　Hierarchy　Process)　assess　the　risk　assessment　process,　and　achieve　the　quantitative　evaluation　of　the　secure　operation　system　risk　management,　enhancing　the　objectivity　of　the　operating　system　risk　quantitative　evaluation.　In　conclusion,　the　application　evaluation　model　is　validated　by　the　examples,　and　the　experimental　results　show　that　the　model　can　effectively　assess　the　operating　system　security　risk　levels.　©　2011　IEEE.