How　to　obtain　good　damping　effect　and　prevent　overturn　are　two　key　problems　which　have　to　be　solved　before　applying　isolation　technology　to　high-rise　buildings.　By　using　comparative　analysis　of　the　seismic　time　history　of　aseismic　and　isolated　high-rise　buildings,　the　integrated　multi-modal　damping　phenomenon　of　high-rise　buildings　is　validated.　According　to　the　explicit　formulas　of　multi-modes　height-width　ratio,　it　is　found　that　high　modes　have　big　influence　on　height-width　ratio　calculation,　which　should　not　be　neglected　in　the　anti-overturning　design　of　high-rise　isolated　buildings.