In　order　to　analyze　the　seismic　behavior　of　exterior　beam　to　column　joints　of　large　multi-story　precast　concrete　structures,　an　experimental　study　on　full-scale　beam　to　column　joint　models　subjected　to　high　axial　loading　and　reversed　cyclic　loading　was　conducted.　The　failure　pattern,　hysteretic　characteristic,　skeleton　curve,　displacement　ductility　and　energy　dissipation　were　analyzed.　The　numerical　joint　model　taking　the　rebar　slippage　into　consideration　was　developed　based　on　the　OPENSEES　software　and　validated　against　the　experimental　results.　Then　the　parametric　analysis　was　performed.　The　study　results　indicate　that　the　overall　seismic　performance　of　the　precast　joint　is　almost　the　same　as　that　of　a　monolithic　joint.　Column　section　dimension　has　a　greater　impact　on　the　capacity　of　joint　than　the　loading　level　of　the　column,　rebar　diameter　has　an　impact　on　the　unloading　stiffness　and　pinching　behavior,　instead　of　on　the　capacity　of　joint.