Experiments　on　reinforced　concrete　frame　spatial　beam-slab-column　joints　are　conducted　under　low　cyclic　repeated　loadings.　Failure　modes,　hysteresis　curves　and　other　seismic　performance　of　the　spatial　joints　are　investigated.　Experiment　results　show　that　under　the　action　of　the　positive　moment,　the　bearing　capacity　of　beam-slab-column　joint　is　increased　just　a　little　and　the　displacment　has　developped　fully　until　the　beam　steel　reached　its　tension　failure　state;　under　the　action　of　the　negative　moment,　the　bearing　capacity　of　beam-slab-column　joints　have　been　increased　by　more　than　2　times　for　the　participation　effect　of　the　slab　steel　and　the　deformability　is　controlled　by　the　damage　of　the　compression　area　concrete,　which　is　familiar　with　the　beam-column　joint,　the　bearing　capacity　of　the　joint　with　slab　under　the　action　of　oblique　direction　loading　is　a　little　lower　than　the　strength　of　the　joint　which　is　loaded　in-plane.