According　to　the　decentralization　of　modeling　tasks　caused　by　user　who　is　essentially　nondeterministic　and　highly　individual　in　Ambient　Intelligence　(AmI)　environment,　the　mental　model,　plan　model　and　behavior　model　are　introduced　to　describe　both　static　features　and　dynamical　behavior　of　user　in　AmI　environment.　With　the　interactive　model　based　on　multi-agent,　a　formal　approach　to　model　user　is　proposed　at　first.　Meanwhile,　the　relations　between　agents　and　AmI　system　are　discussed　in　detail.　The　path　which　maps　the　natural　scenario　of　an　AmI　environment　into　a　real　system　shows　that　our　models　can　help　designers　capture　user＇s　static　features　and　dynamic　behavior,　and　these　relations　between　agents　and　AmI　system　can　help　designer　to　manage　and　track　AmI　system　from　its　requirements　to　implementation　through　as　well.　©　2013　Springer-Verlag.