This　paper　presents　the　experimental　study　on　the　seismic　performance　of　steel　frame　structures　equipped　with　novel　sliding　connection　joints　and　wall　panels　reinforced　by　the　fiber-reinforced　polymer　(FRP)　sheet.　Based　on　the　proposed　sliding　connection　joints　and　reinforced　wall　panels,　five　specimens　were　tested　under　cyclic　loading.　The　bearing　capacity,　ductility　performance,　and　energy　dissipation　capacity　of　the　specimens　were　analyzed.　Experimental　results　proved　that　the　failure　modes　of　all　specimens　were　the　crack　of　the　panels　and　the　column　end　buckling.　And　the　infill　wall　panels　had　a　significant　supporting　effect　on　the　frame.　The　sliding　joint　and　FRP　sheet　can　enhance　the　collaborative　ability,　strength,　and　cumulative　energy　dissipation　of　the　infill　steel　frame.　Finally,　a　simplified　calculation　method　is　developed　to　evaluate　the　load-bearing　capacity　of　the　infill　steel　frame,　considering　the　effect　of　the　panels.　The　results　proved　the　method　owned　acceptable　accuracy,　which　could　direct　the　practical　design　of　the　high-rise　structure　buildings.