Service　reputation　is　a　key　factor　for　services　selection　and　services　composition　in　Service　Oriented　AmI　system,　and　the　calculation　of　reputation　in　AmI　system　should　fully　reflect　the　feature　of　multi　-rating　fusion　and　rating＇s　utility　value　dynamic　attenuation　mechanism.　A　good　model　is　important　for　reputation　computing.　The　paper　proposes　three　models　from　different　views.　Conceptual　data　model　gives　the　constitution　of　reputation　using　the　UML　class　diagram;　Conceptual　layered.　model.classifies　the　related　conceptual　which　involve　in　the　reputation　computing　into　different　layers;　Computation　model　gives　the　core　algorithms　which　are　used　to　computing　the　reputation.　These　models　provide　a　reference　guide.for　reputation＇.　computing　in　service-oriented　AmI.