In　order　to　research　on　seismic　performance　of　full-scale　beam-column　joints　of　RC　frames　under　low　cyclic　loading,　finite　element　software　ABAQUS　is　used　to　nonlinear　analysis.　Analysis　results　show　that:　the　process　of　load　carrying　and　fracture　development　of　beam-column　joints　are　simulated　using　concrete　damage　plasticity　model;　nonlinear　finite　element　method　is　easy　to　obtain　stress-strain　relationship;　and　can　effective　analyses　the　complex　mechanical　behavior　of　core　areas　of　joints.