In　the　low-cycle　reciprocating　loading　test　of　cold-formed　thin-walled　steel　composite　wall　connected　with　rivet　locking　or　self-tapping　screw,　the　phenomenon　of　＇pinching＇　of　hysteresis　curve　is　serious　and　the　energy　dissipation　capacity　is　poor.　To　reduce　the　damage　of　cold-formed　thin-wall　steel　composite　wall　under　earthquake　and　improve　the　energy　dissipation　capacity　of　the　structure,　a　cold-formed　thin-wall　steel　composite　wall　structure　system　with　lead　damper　was　proposed,　and　seismic　performance　experimental　study　was　conducted　based　on　three　variables,　i.e.,　cold-formed　thin-walled　steel　composite　wall　corner　connection　mode,　panel　rivet　spacing,　and　type.　Results　show　that　with　the　addition　of　the　lead　damper,　the　deformation　capacity　and　energy　dissipation　capacity　of　the　cold-formed　thin-walled　steel　composite　wall　structure　system　based　on　rivet　locking　or　self-tapping　screw　connection　were　significantly　improved　under　the　low-cycle　reciprocating　loading.　The　stiffness　degradation　tended　to　be　gentle,　the　injury　index　was　significantly　decreased,　and　the　failure　pattern　was　optimized,　while　the　yield　load　and　peak　load　were　slightly　reduced.　Then,　with　the　rivet　spacing　reduced,　the　yield　load,　peak　load,　peak　displacement,　and　shear　strength　of　the　composite　wall　were　improved　to　some　extent,　but　the　energy　dissipation　coefficient　had　little　difference.　Meanwhile,　the　yield　displacement,　yield　load,　peak　displacement,　and　peak　load　of　the　cold-formed　thin-walled　steel　composite　wall　based　on　rivet　connection　were　significantly　higher　than　those　of　the　cold-formed　thin-walled　steel　composite　wall　based　on　self-tapping　screw　connection,　but　the　ductility　and　energy　dissipation　coefficient　of　the　walls　were　similar.　©　2020,　Editorial　Board　of　Journal　of　Harbin　Institute　of　Technology.　All　right　reserved.