In　order　to　further　study　the　seismic　behavior　of　reinforced　concrete　core　wall,　two　reinforced　concrete　core　wall　specimens　were　built　and　tested　to　failure　under　the　combined　action　of　constant　axial　load　and　reversed　cyclic　lateral　load.　The　span-depth　ratio　of　coupling　beam　on　each　core　wall　was　focused　on.　This　paper　presents　the　results,　including　failure　mode,　hysteretic　behavior,　load-carrying　capacity,　ductility,　energy　dissipation　ability,　shear　lag　effect.　The　final　overall　bending　damage　occurred　at　the　bottom　of　each　specimen.　With　the　span-depth　ratio　of　coupling　beams　dropping　from　1.7　to　0.9,　stiffness　and　load-carrying　capacity　of　the　specimen　had　risen　markedly,　but　the　ductility　performance　dropped　significantly.　It　can　be　seen　that　the　span-depth　ratio　of　coupling　beam　has　important　effect　on　the　seismic　behavior　of　reinforced　concrete　core　wall.