Quasi-static　tests　were　conducted　to　study　the　seismic　flexural-shear　damage　mechanisms　and　rapid　repair　techniques　for　earthquake　damaged　bridge　piers.　Six　original　pier　specimens　of　circular　cross　sections　were　severely　damaged　under　cyclic　lateral　force　and　constant　axial　load,　and　the　damaged　specimens　were　subsequently　repaired　using　high-fluidity　concrete　with　high　early-strength　and　Carbon　Fiber-Reinforced　Polymer　(CFRP),　and　then　put　into　test　again　within　a　week.　The　failure　pattern,　strength,　ductility　and　dissipated　energy　parameters　and　stiffness　degradation　of　the　repaired　specimens　were　compared　with　the　original　ones.　It　is　founded　that　the　ultimate　performance　of　bridge　piers　designed　according　to　current　seismic　design　codes　of　JTG/T　B02-01-2008　and　Caltrans　with　minimum　confining　reinforcement　ratios　may　be　dominated　by　shear　failure　in　the　plastic　hinge　zones.　The　repaired　specimens　show　lower　initial　stiffness　and　larger　yield　displacement　as　a　result　of　the　pre-existing　damage.　But　the　failure　for　all　of　the　repaired　specimens　was　due　to　flexure,　with　higher　strength,　larger　or　the　same　ductility　and　dissipated　energy　parameters　and　recovered　stiffness,　which　demonstrated　the　effectiveness　of　the　proposed　repair　techniques.