To　solve　the　unfavorable　deformation　problems　of　asymmetric　RC　frame-prefabricated　shear　wall　(AFPSW)　structures　under　earthquake　excitation,　such　as　inter-story　drift　concentration　and　plane　torsion,　a　seismic　strengthening　method　of　attaching　external　rocking　frame　was　proposed　to　improve　the　seismic　performance　and　damage　deformation　capacity　of　the　AFPSW　structure.　The　dynamic　equation　of　the　structural　system　was　derived,　the　deformation　control　mechanism　was　revealed,　and　the　corresponding　design　method　was　put　forward　for　rocking　frame.　To　verify　the　proposed　method,　the　AFPSW　finite　element　model　was　established　and　verified　based　on　shaking　table　test.　On　the　basis　of　the　model,　nonlinear　dynamic　time-history　analysis　was　conducted,　and　the　deformation　modes,　damage　states,　and　performance　improvement　of　the　AFPSW　structure　with　and　without　reinforcement　were　investigated.　Results　show　that　the　drift　concentration　factor　NDCF　and　torsion　of　the　strengthened　structure　were　reduced　by　20.9%　and　53%　respectively　under　peak　ground　acceleration　of　0.62　g,　which　greatly　improved　the　unfavorable　deformation　of　the　structure　and　reduced　the　damage　level　of　the　system.It　indicates　that　the　dynamic　equation　of　the　structure　was　correctly　deduced,　and　the　proposed　reinforcement　design　method　is　effective,　which　can　remarkably　improve　structural　uniformity　and　seismic　performance.　Copyright　©2021　Journal　of　Harbin　Institute　of　Technology.All　rights　reserved.