In　order　to　improve　the　credibility　of　the　human　animation,　personality　model,　emotion　model　and　mood　model,　are　designed　to　represent　personal　characteristic　and　emotional　states.　And　a　reformative　method　for　computing　perception　weights　is　proposed.　Among　the　three　models,　virtual　human＇s　perception　at　the　virtual　scene　is　determined　by　the　personality　model　and　the　spatial　position,　and　it　also　changes　the　avatar＇s　emotion　and　mood　models,　while　the　changed　emotion　and　mood　models　alters　the　behaviors　of　the　virtual　human.　The　updated　emotional　state　motivates　the　virtual　human　to　react　to　the　scene.　Applying　this　modeling　technology　and　related　mapping　method　to　virtual　reality　system　is　helpful　to　synthesizing　new　motions　by　calculating　emotion　model　rapidly.　In　the　final　animation　effects,　the　authors　can　find　out　the　influences　of　spatial　position　on　emotion　update,　emotion　to　behavior　change　and　the　diversification　of　different　avatar.