Low　cyclic　fatigue　of　the　shear　connectors　of　partially-restrained　steel　frame　with　RC　infill　walls　(PSRCW)　is　typical,　and　usually　leads　to　rapid　post-peak　strength　degradation　and　poor　ductility.　In　order　to　improve　the　ductility　of　PSRCW,　three　types　of　shear　connectors,　including　channel　steel,　U-shaped　bar　and　stud,　were　employed　in　this　study.　Low　cyclic　loading　test　on　three　1/3　sccale　one-bay,　two-story　test　specimens　were　carried　out　and　the　effects　of　shear　connectors　on　the　structural　performance　was　studied.　The　force　transfer　mechanism,　failure　mode,　hysteretic　behavior,　stiffness　degradation,　deformation　and　ductility,　and　energy　dissipation　were　discussed.　Test　results　reveal　that　wall　crushing　was　the　main　failure　pattern　and　the　failure　mode　was　ductile.　Low　cyclic　fatigue　of　shear　connectors　did　not　occur,　and　the　performance　of　the　specimens,　including　post-peak　strength　degradation,　ductility　behavior,　deformation　capacity,　and　energy　dissipation,　was　significantly　improved.　In　order　to　avoid　fracturing　of　shear　connectors,　it　is　critical　to　select　suitable　strength　grade　for　the　infill　wall　concrete　to　ensure　that　the　shear　capability　of　shear　connectors　is　consistent　with　shear　capacity　of　the　infill　walls.　Avoiding　the　fatigue　failure　of　shear　connectors　is　crucial　to　ensure　the　ductile　failure　mode　of　PSRCW.