Based　on　a　low　cyclic　loading　test,　the　local　performances　of　three　one-bay,　two-story　partially-restrained　steel　frame　with　RC　infill　walls(PSRCW),　including　the　failure　mode　and　deformation　capacity　of　the　partially　restrained　connections,　the　infill　walls　and　the　slip　between　the　steel　frames　and　the　infill　walls　and　the　force　distribution　in　the　structural　system,　were　studied.　The　results　indicate　that　the　infill　wall　greatly　increased　the　structural　stiffness　and　reduced　the　rotation　capacity　of　the　partially　restrained　connections.　If　the　fatigue　fracture　of　the　shear　connectors　can　be　avoided,　the　types　of　shear　connectors　did　not　have　obvious　effects　on　the　behavior　of　the　PSRCW.　In　order　to　avoid　fatigue　fracture　of　the　shear　connectors,　it　was　suggested　to　use　low　grade　concrete　infill　walls　and　to　employ　U-shaped　deformed　bars　or　channel　connectors.　The　infill　wall　bore　approximately　80%　of　the　overall　lateral　load,　and　the　steel　frame　took　about　60%　of　the　overall　overturning　moment.