Ground　horizontal　motions　may　come　from　any　direction　because　of　the　randomness　of　the　ground　motions,　which　may　make　the　reinforced　concrete　(RC)　columns　damaged　under　the　biaxial　loadings.　The　method　of　focuing　longitudinal　bars　on　comer　in　the　section　was　present　in　the　paper　to　improve　the　seismic　behavior　of　RC　columns,　and　was　verified　by　the　low　cycle　reciprocal　loading　test.　The　test　results　indicate　that　the　seismic　behavior　of　RC　columns　with　comer　focus　longitudinal　bars　in　section　can　be　improved　greatly.