Repairing　seismic-damaged　members　is　an　important　way　to　improve　the　seismic　performance　of　seismic-damaged　structures.　To　effectively　improve　the　seismic　performance　of　seismic-damaged　members,　this　study　adopted　fiber-reinforced　concrete　(FRC)　and　carbon　textile　for　repair.　Considering　the　influences　of　repair　methods,　axial　compression　ratio,　and　pre-damage　degree,　six　reinforced　concrete　(RC)　columns　were　designed　and　manufactured　to　carry　out　experimental　research.　The　experimental　results　showed　that　using　FRC　and　carbon　textile　to　repair　damaged　RC　columns　can　improve　their　failure　modes　and　significantly　enhance　their　mechanical　properties,　crack　resistance,　and　energy　dissipation　capacity;　Moreover,　the　relevant　displacementstrain　curves,　displacement-crack　width　curves,　stiffness　degradation　curves,　and　damage　evolution　curves　further　demonstrated　the　effectiveness　of　using　FRC　and　carbon　textile　for　repair.　Through　theoretical　analysis,　this　study　established　relevant　calculation　methods　for　flexural　and　shear　bearing　capacity,　and　proved　the　accuracy　of　the　proposed　theoretical　calculation　methods　combined　with　the　experimental　data.　Additionally,　the　influences　of　the　height　of　the　repaired　area,　the　number　of　carbon　textile　layers,　and　the　axial　compression　ratio　on　the　seismic　performance　of　repaired　RC　columns　are　revealed　by　numerical　analysis.　The　above　research　can　be　helpful　for　the　repair　of　actual　seismic-damaged　RC　columns.