To　reveal　interaction　between　tooth　surface　wear　and　gear　vibration,　this　study　proposes　a　dynamic　model　incorporating　interface　characteristics　and　a　wear　prediction　model　with　topographical-lubricated-dynamic　coupling　effect.　By　integrating　the　effects　of　interface　characteristics　into　wear-induced　changes,　the　effect　of　the　wear　accumulation　on　dynamic　characteristics　is　studied.　With　coupling　effect　of　surface　topography,　lubrication　condition,　and　dynamic　load,　parametric　analyses　are　conducted　to　elucidate　the　influences　of　these　factors　on　wear　progression,　accompanied　by　comparative　validation.　Compared　to　dynamic　load,　the　lubrication　condition　enhancement　induced　by　topographic　changes　exerts　a　greater　influence　on　the　wear　progression.　This　study　accurately　predicts　dynamic　response　and　wear　progression,　and　provides　a　theoretical　basis　for　condition　monitoring　and　lifespan　prediction　for　gears.　©　2025　Elsevier　Ltd