Experiments　on　reinforced　concrete　frame　spatial　joints　are　conducted　under　low　level　cyclic　loadings.The　seismic　performance　of　the　spatial　joints　is　investigated,including　failure　mode,　hysterisis　curve,　stiffness　degradation,energy　dissipation　and　displacement　ductility.The　experiment　result　shows　that　the　column-hinge　damage　mechanism　had　happened　and　the　bearing　capactity,　energy　dissipation　character　and　displacement　ductility　had　decreased　under　the　oblique　direction　earthquake　effect.The　aseismic　designing　method　should　consider　the　oblique　direction　earthquake　effect.