The　dynamic　characteristics　of　self-anchored　suspension　bridges　is　experimented　and　analyzed　using　the　way　of　non-linear　dynamic　time　history.　And　based　on　it,　the　effect　of　non-linear　viscous　damper　on　the　shock-resistant　capability　of　this　bridge　is　studied.　The　results　indicated　that　the　calculated　model　of　suspended　bridge　built　by　beam　and　bar　elements　can　be　used　to　the　seismic　responsive　analysis　of　structure,　whose　result　is　reliable.　When　the　non-linear　viscous　dampers　with　proper　parameters　are　installed　along　the　lengthwise　direction　of　main　bridge,　the　control　regional　relative　displacement　of　structure　is　reduced　effectively.　The　seismic　response　effect　of　vital　positions　is　improved　to　some　extent.　Meanwhile,　these　confirm　that　the　viscous　damper　has　good　dissipation　energy　and　damped　effect　too.