For　reinforced　concrete　piers　with　relatively　small　shear　spans,　corrosion　in　the　offshore　environment　may　change　the　structural　damage　form.　It　is　necessary　to　study　the　effect　of　simultaneous　corrosion　on　seismic　properties.　Four　bridge　piers　with　a　shear　span　ratio　of　2　and　different　degrees　of　corrosion　were　prepared　by　electrochemical　accelerated　corrosion　methods.　The　effect　of　corrosion　on　seismic　performance　of　bridge　piers　is　studied　by　a　shaking　table　test.　Under　the　action　of　seismic　excitations,　the　failure　mode,　natural　vibration　period,　damping　ratio,　acceleration,　and　displacement　response,　accumulated　residual　displacement　and　seismic　energy　dissipation　capacity　of　the　bridge　pier　were　analyzed.　The　results　show　that:　as　the　earthquake　intensity　increases,　the　energy　dissipation　capacity　of　corroded　components　decreases,　and　the　seismic　performance　degrades　significantly.　The　ultimate　damage　form　of　non-corrosion　piers　is　bending　failure.　The　piers　with　more　severe　corrosion　appear　to　yield　prematurely　in　the　later　stage　of　loading.　Some　stirrups　could　not　provide　sufficient　shear　load　capacity　for　the　specimen.　The　specimen　finally　showed　a　bending-shear　failure　form.　Copyright　©2022　Engineering　Mechanics.　All　rights　reserved.