Studies　have　shown　that　laminated　rubber　bearing　bridges　of　small　and　medium　span,　have　poor　anti-seismic　performance.　In　order　to　study　the　seismic　response　characteristics　of　laminated　rubber　bearing　simply　supported　girder　pedestrian　bridge,　taking　a　typical　concrete　pedestrian　bridge　as　the　research　object,　finite　element　dynamic　analysis　model　was　established　by　SAP2000,　with　nonlinear　time　history　analysis　method,　effects　of　vertical　seismic　and　other　factors　on　the　seismic　responses　of　the　pedestrian　bridge　were　researched　and　seismic　potential　harm　of　the　same　bridges　were　revealed.　Results　show　that　laminated　rubber　bearing　simply　supported　girder　pedestrian　bridge　have　poor　seismic　performance　and　it　is　easy　leading　to　beam　falling　caused　by　large　relative　displacement　during　an　severe　earthquake.　The　response　of　piers　is　small　and　their　lateral　resist　ability　was　not　full　played.　Vertical　earthquake　exert　an　adverse　effect　on　the　seismic　performance　of　pedestrian　bridge,　which　analysis　must　be　conducted　to　accurately　reflect　its　seismic　response.