Repairing　damaged　structural　members　is　crucial　for　restoring　the　seismic　performance　and　functionality　of　seismic-damaged　structures.　Therefore,　in　this　study,　modified　concrete　and　textile　are　used　to　repair　the　damaged　reinforced　concrete　(RC)　column,　and　related　experimental,　theoretical　and　numerical　studies　are　carried　out.　Considering　the　influence　of　repair　methods,　axial　compression　ratio　and　pre-damage　degree,　six　RC　columns　were　designed　for　testing.　The　results　demonstrated　that　using　modified　concrete　and　textile　to　repair　damaged　RC　columns　can　effectively　improve　the　bearing　capacity,　energy　dissipation　capacity,　and　crack　resistance;　However,　increases　in　axial　compression　ratio　and　pre-damage　degree　negatively　affect　the　seismic　performance,　leading　to　decreased　energy　dissipation　capacity　and　crack　resistance.　Through　theoretical　analysis,　the　calculation　method　of　flexural　capacity　of　RC　columns　repaired　by　modified　concrete　and　textile　is　established,　and　a　novel　restoring　force　model　is　proposed.　Combined　with　the　experimental　data,　it　is　proved　that　the　theoretical　calculation　method　for　bearing　capacity　derived　in　this　study　is　accurate,　and　the　restoring　force　model　can　effectively　reveal　the　mechanical　properties　of　RC　members.　Numerical　analysis　showed　that　the　seismic　performance　of　the　repaired　RC　columns　is　gradually　enhanced,　with　the　increase　of　the　number　of　textile　layers.　©　2025　Elsevier　Ltd